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884 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
c2a96b7f18 |
Driver core changes for 6.11-rc1
Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases to
get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions. It's not all that useful for a "write a whole driver
in rust" type of thing, but the firmware bindings do help out the
phy rust drivers, and the driver core bindings give a solid base on
which others can start their work. There is still a long way to go
here before we have a multitude of rust drivers being added, but
it's a great first step.
- driver core const api changes. This reached across all bus types,
and there are some fix-ups for some not-common bus types that
linux-next and 0-day testing shook out. This work is being done to
help make the rust bindings more safe, as well as the C code, moving
toward the end-goal of allowing us to put driver structures into
read-only memory. We aren't there yet, but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases
to get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions.
It's not all that useful for a "write a whole driver in rust" type
of thing, but the firmware bindings do help out the phy rust
drivers, and the driver core bindings give a solid base on which
others can start their work.
There is still a long way to go here before we have a multitude of
rust drivers being added, but it's a great first step.
- driver core const api changes.
This reached across all bus types, and there are some fix-ups for
some not-common bus types that linux-next and 0-day testing shook
out.
This work is being done to help make the rust bindings more safe,
as well as the C code, moving toward the end-goal of allowing us to
put driver structures into read-only memory. We aren't there yet,
but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems"
* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
ARM: sa1100: make match function take a const pointer
sysfs/cpu: Make crash_hotplug attribute world-readable
dio: Have dio_bus_match() callback take a const *
zorro: make match function take a const pointer
driver core: module: make module_[add|remove]_driver take a const *
driver core: make driver_find_device() take a const *
driver core: make driver_[create|remove]_file take a const *
firmware_loader: fix soundness issue in `request_internal`
firmware_loader: annotate doctests as `no_run`
devres: Correct code style for functions that return a pointer type
devres: Initialize an uninitialized struct member
devres: Fix memory leakage caused by driver API devm_free_percpu()
devres: Fix devm_krealloc() wasting memory
driver core: platform: Switch to use kmemdup_array()
driver core: have match() callback in struct bus_type take a const *
MAINTAINERS: add Rust device abstractions to DRIVER CORE
device: rust: improve safety comments
MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
firmware: rust: improve safety comments
...
|
||
|
Linus Torvalds
|
fbc90c042c |
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff). Yu has a fix which I'll send along later via the hotfixes branch. - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Is anyone reading this stuff? If so, email me! - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2C+QAKCRDdBJ7gKXxA joTkAQDvjqOoFStqk4GU3OXMYB7WCU/ZQMFG0iuu1EEwTVDZ4QEA8CnG7seek1R3 xEoo+vw0sWWeLV3qzsxnCA1BJ8cTJA8= =z0Lf -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. * tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits) mm/mglru: fix ineffective protection calculation mm/zswap: fix a white space issue mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio mm/hugetlb: fix possible recursive locking detected warning mm/gup: clear the LRU flag of a page before adding to LRU batch mm/numa_balancing: teach mpol_to_str about the balancing mode mm: memcg1: convert charge move flags to unsigned long long alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting lib: reuse page_ext_data() to obtain codetag_ref lib: add missing newline character in the warning message mm/mglru: fix overshooting shrinker memory mm/mglru: fix div-by-zero in vmpressure_calc_level() mm/kmemleak: replace strncpy() with strscpy() mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB mm: ignore data-race in __swap_writepage hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr mm: shmem: rename mTHP shmem counters mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async() mm/migrate: putback split folios when numa hint migration fails ... |
||
|
Linus Torvalds
|
f557af081d |
RISC-V Patches for the 6.11 Merge Window, Part 1
* Support for various new ISA extensions:
* The Zve32[xf] and Zve64[xfd] sub-extensios of the vector
extension.
* Zimop and Zcmop for may-be-operations.
* The Zca, Zcf, Zcd and Zcb sub-extensions of the C extension.
* Zawrs,
* riscv,cpu-intc is now dtschema.
* A handful of performance improvements and cleanups to text patching.
* Support for memory hot{,un}plug
* The highest user-allocatable virtual address is now visible in
hwprobe.
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Merge tag 'riscv-for-linus-6.11-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Support for various new ISA extensions:
* The Zve32[xf] and Zve64[xfd] sub-extensios of the vector
extension
* Zimop and Zcmop for may-be-operations
* The Zca, Zcf, Zcd and Zcb sub-extensions of the C extension
* Zawrs
- riscv,cpu-intc is now dtschema
- A handful of performance improvements and cleanups to text patching
- Support for memory hot{,un}plug
- The highest user-allocatable virtual address is now visible in
hwprobe
* tag 'riscv-for-linus-6.11-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (58 commits)
riscv: lib: relax assembly constraints in hweight
riscv: set trap vector earlier
KVM: riscv: selftests: Add Zawrs extension to get-reg-list test
KVM: riscv: Support guest wrs.nto
riscv: hwprobe: export Zawrs ISA extension
riscv: Add Zawrs support for spinlocks
dt-bindings: riscv: Add Zawrs ISA extension description
riscv: Provide a definition for 'pause'
riscv: hwprobe: export highest virtual userspace address
riscv: Improve sbi_ecall() code generation by reordering arguments
riscv: Add tracepoints for SBI calls and returns
riscv: Optimize crc32 with Zbc extension
riscv: Enable DAX VMEMMAP optimization
riscv: mm: Add support for ZONE_DEVICE
virtio-mem: Enable virtio-mem for RISC-V
riscv: Enable memory hotplugging for RISC-V
riscv: mm: Take memory hotplug read-lock during kernel page table dump
riscv: mm: Add memory hotplugging support
riscv: mm: Add pfn_to_kaddr() implementation
riscv: mm: Refactor create_linear_mapping_range() for memory hot add
...
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||
|
Linus Torvalds
|
acc5965b9f |
Char/Misc and other driver changes for 6.11-rc1
Here is the "big" set of char/misc and other driver subsystem changes for 6.11-rc1. Nothing major in here, just loads of new drivers and updates. Included in here are: - IIO api updates and new drivers added - wait_interruptable_timeout() api cleanups for some drivers - MODULE_DESCRIPTION() additions for loads of drivers - parport out-of-bounds fix - interconnect driver updates and additions - mhi driver updates and additions - w1 driver fixes - binder speedups and fixes - eeprom driver updates - coresight driver updates - counter driver update - new misc driver additions - other minor api updates All of these, EXCEPT for the final Kconfig build fix for 32bit systems, have been in linux-next for a while with no reported issues. The Kconfig fixup went in 29 hours ago, so might have missed the latest linux-next, but was acked by everyone involved. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZppR4w8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykwoQCeIaW3nbOiNTmOupvEnZwrN3yVNs8An3Q5L+Br 1LpTASaU6A8pN81Z1m5g =6U1z -----END PGP SIGNATURE----- Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc and other driver updates from Greg KH: "Here is the "big" set of char/misc and other driver subsystem changes for 6.11-rc1. Nothing major in here, just loads of new drivers and updates. Included in here are: - IIO api updates and new drivers added - wait_interruptable_timeout() api cleanups for some drivers - MODULE_DESCRIPTION() additions for loads of drivers - parport out-of-bounds fix - interconnect driver updates and additions - mhi driver updates and additions - w1 driver fixes - binder speedups and fixes - eeprom driver updates - coresight driver updates - counter driver update - new misc driver additions - other minor api updates All of these, EXCEPT for the final Kconfig build fix for 32bit systems, have been in linux-next for a while with no reported issues. The Kconfig fixup went in 29 hours ago, so might have missed the latest linux-next, but was acked by everyone involved" * tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits) misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems misc: delete Makefile.rej binder: fix hang of unregistered readers misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI virtio: add missing MODULE_DESCRIPTION() macro agp: uninorth: add missing MODULE_DESCRIPTION() macro spmi: add missing MODULE_DESCRIPTION() macros dev/parport: fix the array out-of-bounds risk samples: configfs: add missing MODULE_DESCRIPTION() macro misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver misc: keba: Fix missing AUXILIARY_BUS dependency slimbus: Fix struct and documentation alignment in stream.c MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches misc: fastrpc: use coherent pool for untranslated Compute Banks misc: fastrpc: support complete DMA pool access to the DSP misc: fastrpc: add missing MODULE_DESCRIPTION() macro misc: fastrpc: Add missing dev_err newlines misc: fastrpc: Use memdup_user() nvmem: core: Implement force_ro sysfs attribute nvmem: Use sysfs_emit() for type attribute ... |
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Jiri Pirko
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6c85d6b653 |
virtio: rename virtio_find_vqs_info() to virtio_find_vqs()
Since the original virtio_find_vqs() is no longer present, rename virtio_find_vqs_info() back to virtio_find_vqs(). Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-20-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
c95e67bac4 |
virtio: convert the rest virtio_find_vqs() users to virtio_find_vqs_info()
Instead of passing separate names and callbacks arrays to virtio_find_vqs(), have one of virtual_queue_info structs and pass it to virtio_find_vqs_info(). Suggested-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-18-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
7221922da2 |
virtio_balloon: convert to use virtio_find_vqs_info()
Instead of passing separate names and callbacks arrays to virtio_find_vqs(), have one of virtual_queue_info structs and pass it to virtio_find_vqs_info(). Suggested-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-17-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
b49503eaf9 |
virtio: rename find_vqs_info() op to find_vqs()
Since the original find_vqs() is no longer present, rename find_vqs_info() back to find_vqs(). Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-10-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
3c93b576e0 |
virtio: convert find_vqs() op implementations to find_vqs_info()
Convert existing find_vqs() transport implementations to use find_vqs_info() config op. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-7-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
ad9a12576b |
virtio_pci: convert vp_*find_vqs() ops to find_vqs_info()
Convert existing vp_find_vqs() and vp_modern_find_vqs() implementations to find_vqs_info() config op. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Message-Id: <20240708074814.1739223-6-jiri@resnulli.us> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jeff Johnson
|
89067019d7 |
virtio: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/virtio/virtio_dma_buf.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240602-md-virtio_dma_buf-v1-1-ce602d47e257@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Jeff Johnson
|
ab0727f3dd |
virtio: add missing MODULE_DESCRIPTION() macros
With ARCH=sh, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/virtio/virtio.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/virtio/virtio_ring.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Message-Id: <20240702-md-sh-drivers-virtio-v1-1-cf7325ab6ccc@quicinc.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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zhenwei pi
|
fdba68d2ad |
virtio_balloon: separate vm events into a function
All the VM events related statistics have dependence on 'CONFIG_VM_EVENT_COUNTERS', separate these events into a function to make code clean. Then we can remove 'CONFIG_VM_EVENT_COUNTERS' from 'update_balloon_stats'. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20240423034109.1552866-2-pizhenwei@bytedance.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> |
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Xuan Zhuo
|
840b2d39a2 |
virtio_ring: fix KMSAN error for premapped mode
Add kmsan for virtqueue_dma_map_single_attrs to fix: BUG: KMSAN: uninit-value in receive_buf+0x45ca/0x6990 receive_buf+0x45ca/0x6990 virtnet_poll+0x17e0/0x3130 net_rx_action+0x832/0x26e0 handle_softirqs+0x330/0x10f0 [...] Uninit was created at: __alloc_pages_noprof+0x62a/0xe60 alloc_pages_noprof+0x392/0x830 skb_page_frag_refill+0x21a/0x5c0 virtnet_rq_alloc+0x50/0x1500 try_fill_recv+0x372/0x54c0 virtnet_open+0x210/0xbe0 __dev_open+0x56e/0x920 __dev_change_flags+0x39c/0x2000 dev_change_flags+0xaa/0x200 do_setlink+0x197a/0x7420 rtnl_setlink+0x77c/0x860 [...] Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Tested-by: Alexander Potapenko <glider@google.com> Message-Id: <20240606111345.93600-1-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> # s390x Acked-by: Jason Wang <jasowang@redhat.com> |
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David Hildenbrand
|
5062574422 |
mm/memory_hotplug: skip adjust_managed_page_count() for PageOffline() pages when offlining
We currently have a hack for virtio-mem in place to handle memory offlining with PageOffline pages for which we already adjusted the managed page count. Let's enlighten memory offlining code so we can get rid of that hack, and document the situation. Link: https://lkml.kernel.org/r/20240607090939.89524-4-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Oscar Salvador <osalvador@suse.de> Cc: Alexander Potapenko <glider@google.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eugenio Pérez <eperezma@redhat.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Marco Elver <elver@google.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Wei Liu <wei.liu@kernel.org> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Hildenbrand
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503b158fc3 |
mm/memory_hotplug: initialize memmap of !ZONE_DEVICE with PageOffline() instead of PageReserved()
We currently initialize the memmap such that PG_reserved is set and the refcount of the page is 1. In virtio-mem code, we have to manually clear that PG_reserved flag to make memory offlining with partially hotplugged memory blocks possible: has_unmovable_pages() would otherwise bail out on such pages. We want to avoid PG_reserved where possible and move to typed pages instead. Further, we want to further enlighten memory offlining code about PG_offline: offline pages in an online memory section. One example is handling managed page count adjustments in a cleaner way during memory offlining. So let's initialize the pages with PG_offline instead of PG_reserved. generic_online_page()->__free_pages_core() will now clear that flag before handing that memory to the buddy. Note that the page refcount is still 1 and would forbid offlining of such memory except when special care is take during GOING_OFFLINE as currently only implemented by virtio-mem. With this change, we can now get non-PageReserved() pages in the XEN balloon list. From what I can tell, that can already happen via decrease_reservation(), so that should be fine. HV-balloon should not really observe a change: partial online memory blocks still cannot get surprise-offlined, because the refcount of these PageOffline() pages is 1. Update virtio-mem, HV-balloon and XEN-balloon code to be aware that hotplugged pages are now PageOffline() instead of PageReserved() before they are handed over to the buddy. We'll leave the ZONE_DEVICE case alone for now. Note that self-hosted vmemmap pages will no longer be marked as reserved. This matches ordinary vmemmap pages allocated from the buddy during memory hotplug. Now, really only vmemmap pages allocated from memblock during early boot will be marked reserved. Existing PageReserved() checks seem to be handling all relevant cases correctly even after this change. Link: https://lkml.kernel.org/r/20240607090939.89524-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Oscar Salvador <osalvador@suse.de> [generic memory-hotplug bits] Cc: Alexander Potapenko <glider@google.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eugenio Pérez <eperezma@redhat.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Marco Elver <elver@google.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Wei Liu <wei.liu@kernel.org> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Greg Kroah-Hartman
|
d69d804845 |
driver core: have match() callback in struct bus_type take a const *
In the match() callback, the struct device_driver * should not be changed, so change the function callback to be a const *. This is one step of many towards making the driver core safe to have struct device_driver in read-only memory. Because the match() callback is in all busses, all busses are modified to handle this properly. This does entail switching some container_of() calls to container_of_const() to properly handle the constant *. For some busses, like PCI and USB and HV, the const * is cast away in the match callback as those busses do want to modify those structures at this point in time (they have a local lock in the driver structure.) That will have to be changed in the future if they wish to have their struct device * in read-only-memory. Cc: Rafael J. Wysocki <rafael@kernel.org> Reviewed-by: Alex Elder <elder@kernel.org> Acked-by: Sumit Garg <sumit.garg@linaro.org> Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Björn Töpel
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0546d7043e
|
virtio-mem: Enable virtio-mem for RISC-V
Now that RISC-V has memory hotplugging support, virtio-mem can be used on the platform. Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20240605114100.315918-10-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
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Linus Torvalds
|
2ef32ad224 |
virtio: features, fixes, cleanups
Several new features here: - virtio-net is finally supported in vduse. - Virtio (balloon and mem) interaction with suspend is improved - vhost-scsi now handles signals better/faster. Fixes, cleanups all over the place. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmZN570PHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRp2JUH/1K3fZOHymop6Y5Z3USFS7YdlF+dniedY/vg TKyWERkXOlxq1d9DVxC0mN7tk72DweuWI0YJjLXofrEW1VuW29ecSbyFXxpeWJls b7ErffxDAFRas5jkMCngD8TuFnbEegU0mGP5kbiHpEndBydQ2hH99Gg0x7swW+cE xsvU5zonCCLwLGIP2DrVrn9qGOHtV6o8eZfVKDVXfvicn3lFBkUSxlwEYsO9RMup aKxV4FT2Pb1yBicwBK4TH1oeEXqEGy1YLEn+kAHRbgoC/5L0/LaiqrkzwzwwOIPj uPGkacf8CIbX0qZo5EzD8kvfcYL1xhU3eT9WBmpp2ZwD+4bINd4= =nax1 -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: "Several new features here: - virtio-net is finally supported in vduse - virtio (balloon and mem) interaction with suspend is improved - vhost-scsi now handles signals better/faster And fixes, cleanups all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (48 commits) virtio-pci: Check if is_avq is NULL virtio: delete vq in vp_find_vqs_msix() when request_irq() fails MAINTAINERS: add Eugenio Pérez as reviewer vhost-vdpa: Remove usage of the deprecated ida_simple_xx() API vp_vdpa: don't allocate unused msix vectors sound: virtio: drop owner assignment fuse: virtio: drop owner assignment scsi: virtio: drop owner assignment rpmsg: virtio: drop owner assignment nvdimm: virtio_pmem: drop owner assignment wifi: mac80211_hwsim: drop owner assignment vsock/virtio: drop owner assignment net: 9p: virtio: drop owner assignment net: virtio: drop owner assignment net: caif: virtio: drop owner assignment misc: nsm: drop owner assignment iommu: virtio: drop owner assignment drm/virtio: drop owner assignment gpio: virtio: drop owner assignment firmware: arm_scmi: virtio: drop owner assignment ... |
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Li Zhang
|
c8fae27d14 |
virtio-pci: Check if is_avq is NULL
[bug] In the virtio_pci_common.c function vp_del_vqs, vp_dev->is_avq is involved to determine whether it is admin virtqueue, but this function vp_dev->is_avq may be empty. For installations, virtio_pci_legacy does not assign a value to vp_dev->is_avq. [fix] Check whether it is vp_dev->is_avq before use. [test] Test with virsh Attach device Before this patch, the following command would crash the guest system After applying the patch, everything seems to be working fine. Signed-off-by: Li Zhang <zhanglikernel@gmail.com> Message-Id: <1710566754-3532-1-git-send-email-zhanglikernel@gmail.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Jiri Pirko
|
89875151fc |
virtio: delete vq in vp_find_vqs_msix() when request_irq() fails
When request_irq() fails, error path calls vp_del_vqs(). There, as vq is
present in the list, free_irq() is called for the same vector. That
causes following splat:
[ 0.414355] Trying to free already-free IRQ 27
[ 0.414403] WARNING: CPU: 1 PID: 1 at kernel/irq/manage.c:1899 free_irq+0x1a1/0x2d0
[ 0.414510] Modules linked in:
[ 0.414540] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc4+ #27
[ 0.414540] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014
[ 0.414540] RIP: 0010:free_irq+0x1a1/0x2d0
[ 0.414540] Code: 1e 00 48 83 c4 08 48 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 8b 74 24 04 48 c7 c7 98 80 6c b1 e8 00 c9 f7 ff 90 <0f> 0b 90 90 48 89 ee 4c 89 ef e8 e0 20 b8 00 49 8b 47 40 48 8b 40
[ 0.414540] RSP: 0000:ffffb71480013ae0 EFLAGS: 00010086
[ 0.414540] RAX: 0000000000000000 RBX: ffffa099c2722000 RCX: 0000000000000000
[ 0.414540] RDX: 0000000000000000 RSI: ffffb71480013998 RDI: 0000000000000001
[ 0.414540] RBP: 0000000000000246 R08: 00000000ffffdfff R09: 0000000000000001
[ 0.414540] R10: 00000000ffffdfff R11: ffffffffb18729c0 R12: ffffa099c1c91760
[ 0.414540] R13: ffffa099c1c916a4 R14: ffffa099c1d2f200 R15: ffffa099c1c91600
[ 0.414540] FS: 0000000000000000(0000) GS:ffffa099fec40000(0000) knlGS:0000000000000000
[ 0.414540] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.414540] CR2: 0000000000000000 CR3: 0000000008e3e001 CR4: 0000000000370ef0
[ 0.414540] Call Trace:
[ 0.414540] <TASK>
[ 0.414540] ? __warn+0x80/0x120
[ 0.414540] ? free_irq+0x1a1/0x2d0
[ 0.414540] ? report_bug+0x164/0x190
[ 0.414540] ? handle_bug+0x3b/0x70
[ 0.414540] ? exc_invalid_op+0x17/0x70
[ 0.414540] ? asm_exc_invalid_op+0x1a/0x20
[ 0.414540] ? free_irq+0x1a1/0x2d0
[ 0.414540] vp_del_vqs+0xc1/0x220
[ 0.414540] vp_find_vqs_msix+0x305/0x470
[ 0.414540] vp_find_vqs+0x3e/0x1a0
[ 0.414540] vp_modern_find_vqs+0x1b/0x70
[ 0.414540] init_vqs+0x387/0x600
[ 0.414540] virtnet_probe+0x50a/0xc80
[ 0.414540] virtio_dev_probe+0x1e0/0x2b0
[ 0.414540] really_probe+0xc0/0x2c0
[ 0.414540] ? __pfx___driver_attach+0x10/0x10
[ 0.414540] __driver_probe_device+0x73/0x120
[ 0.414540] driver_probe_device+0x1f/0xe0
[ 0.414540] __driver_attach+0x88/0x180
[ 0.414540] bus_for_each_dev+0x85/0xd0
[ 0.414540] bus_add_driver+0xec/0x1f0
[ 0.414540] driver_register+0x59/0x100
[ 0.414540] ? __pfx_virtio_net_driver_init+0x10/0x10
[ 0.414540] virtio_net_driver_init+0x90/0xb0
[ 0.414540] do_one_initcall+0x58/0x230
[ 0.414540] kernel_init_freeable+0x1a3/0x2d0
[ 0.414540] ? __pfx_kernel_init+0x10/0x10
[ 0.414540] kernel_init+0x1a/0x1c0
[ 0.414540] ret_from_fork+0x31/0x50
[ 0.414540] ? __pfx_kernel_init+0x10/0x10
[ 0.414540] ret_from_fork_asm+0x1a/0x30
[ 0.414540] </TASK>
Fix this by calling deleting the current vq when request_irq() fails.
Fixes:
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Krzysztof Kozlowski
|
b0e55a950e |
virtio: mem: drop owner assignment
virtio core already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Message-Id: <20240331-module-owner-virtio-v2-4-98f04bfaf46a@linaro.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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Krzysztof Kozlowski
|
ebfb92a967 |
virtio: input: drop owner assignment
virtio core already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Message-Id: <20240331-module-owner-virtio-v2-3-98f04bfaf46a@linaro.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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|
Krzysztof Kozlowski
|
7cc5d6caaf |
virtio: balloon: drop owner assignment
virtio core already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Message-Id: <20240331-module-owner-virtio-v2-2-98f04bfaf46a@linaro.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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|
David Stevens
|
c578123e63 |
virtio_balloon: Treat stats requests as wakeup events
Treat stats requests as wakeup events to ensure that the driver responds to device requests in a timely manner. Signed-off-by: David Stevens <stevensd@chromium.org> Acked-by: David Hildenbrand <david@redhat.com> Message-Id: <20240321012445.1593685-3-stevensd@google.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
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|
David Stevens
|
810d831bbb |
virtio_balloon: Give the balloon its own wakeup source
Wakeup sources don't support nesting multiple events, so sharing a
single object between multiple drivers can result in one driver
overriding the wakeup event processing period specified by another
driver. Have the virtio balloon driver use the wakeup source of the
device it is bound to rather than the wakeup source of the parent
device, to avoid conflicts with the transport layer.
Note that although the virtio balloon's virtio_device itself isn't what
actually wakes up the device, it is responsible for processing wakeup
events. In the same way that EPOLLWAKEUP uses a dedicated wakeup_source
to prevent suspend when userspace is processing wakeup events, a
dedicated wakeup_source is necessary when processing wakeup events in a
higher layer in the kernel.
Fixes:
|
||
|
David Hildenbrand
|
e4544c550e |
virtio-mem: support suspend+resume
With virtio-mem, primarily hibernation is problematic: as the machine shuts down, the virtio-mem device loses its state. Powering the machine back up is like losing a bunch of DIMMs. While there would be ways to add limited support, suspend+resume is more commonly used for VMs and "easier" to support cleanly. s2idle can be supported without any device dependencies. Similarly, one would expect suspend-to-ram (i.e., S3) to work out of the box. However, QEMU currently unplugs all device memory when resuming the VM, using a cold reset on the "wakeup" path. In order to support S3, we need a feature flag for the device to tell us if memory remains plugged when waking up. In the future, QEMU will implement this feature. So let's always support s2idle and support S3 with plugged memory only if the device indicates support. Block hibernation early using the PM notifier. Trying to hibernate now fails early: # echo disk > /sys/power/state [ 26.455369] PM: hibernation: hibernation entry [ 26.458271] virtio_mem virtio0: hibernation is not supported. [ 26.462498] PM: hibernation: hibernation exit -bash: echo: write error: Operation not permitted s2idle works even without the new feature bit: # echo s2idle > /sys/power/mem_sleep # echo mem > /sys/power/state [ 52.083725] PM: suspend entry (s2idle) [ 52.095950] Filesystems sync: 0.010 seconds [ 52.101493] Freezing user space processes [ 52.104213] Freezing user space processes completed (elapsed 0.001 seconds) [ 52.106520] OOM killer disabled. [ 52.107655] Freezing remaining freezable tasks [ 52.110880] Freezing remaining freezable tasks completed (elapsed 0.001 seconds) [ 52.113296] printk: Suspending console(s) (use no_console_suspend to debug) S3 does not work without the feature bit when memory is plugged: # echo deep > /sys/power/mem_sleep # echo mem > /sys/power/state [ 32.788281] PM: suspend entry (deep) [ 32.816630] Filesystems sync: 0.027 seconds [ 32.820029] Freezing user space processes [ 32.823870] Freezing user space processes completed (elapsed 0.001 seconds) [ 32.827756] OOM killer disabled. [ 32.829608] Freezing remaining freezable tasks [ 32.833842] Freezing remaining freezable tasks completed (elapsed 0.001 seconds) [ 32.837953] printk: Suspending console(s) (use no_console_suspend to debug) [ 32.916172] virtio_mem virtio0: suspend+resume with plugged memory is not supported [ 32.916181] virtio-pci 0000:00:02.0: PM: pci_pm_suspend(): virtio_pci_freeze+0x0/0x50 returns -1 [ 32.916197] virtio-pci 0000:00:02.0: PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -1 [ 32.916210] virtio-pci 0000:00:02.0: PM: failed to suspend async: error -1 But S3 works with the new feature bit when memory is plugged (patched QEMU): # echo deep > /sys/power/mem_sleep # echo mem > /sys/power/state [ 33.983694] PM: suspend entry (deep) [ 34.009828] Filesystems sync: 0.024 seconds [ 34.013589] Freezing user space processes [ 34.016722] Freezing user space processes completed (elapsed 0.001 seconds) [ 34.019092] OOM killer disabled. [ 34.020291] Freezing remaining freezable tasks [ 34.023549] Freezing remaining freezable tasks completed (elapsed 0.001 seconds) [ 34.026090] printk: Suspending console(s) (use no_console_suspend to debug) Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20240318120645.105664-1-david@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|
Linus Torvalds
|
61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
|
||
|
Xuan Zhuo
|
f9dac92ba9 |
virtio_ring: enable premapped mode whatever use_dma_api
Now, we have virtio DMA APIs, the driver can be the premapped mode whatever the virtio core uses dma api or not. So remove the limit of checking use_dma_api from virtqueue_set_dma_premapped(). Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20240511031404.30903-2-xuanzhuo@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Uwe Kleine-König
|
e117d9b6e7 |
virtio-mmio: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Message-Id: <ef71f955531d5e41b20d801e1149bb08d155679a.1709886922.git.u.kleine-koenig@pengutronix.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|
Jiri Pirko
|
96a8326d69 |
virtio: add debugfs infrastructure to allow to debug virtio features
Currently there is no way for user to set what features the driver should obey or not, it is hard wired in the code. In order to be able to debug the device behavior in case some feature is disabled, introduce a debugfs infrastructure with couple of files allowing user to see what features the device advertises and to set filter for features used by driver. Example: $cat /sys/bus/virtio/devices/virtio0/features 1110010111111111111101010000110010000000100000000000000000000000 $ echo "5" >/sys/kernel/debug/virtio/virtio0/filter_feature_add $ cat /sys/kernel/debug/virtio/virtio0/filter_features 5 $ echo "virtio0" > /sys/bus/virtio/drivers/virtio_net/unbind $ echo "virtio0" > /sys/bus/virtio/drivers/virtio_net/bind $ cat /sys/bus/virtio/devices/virtio0/features 1110000111111111111101010000110010000000100000000000000000000000 Note that sysfs "features" now already exists, this patch does not touch it. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Kent Overstreet
|
0069455bcb |
fix missing vmalloc.h includes
Patch series "Memory allocation profiling", v6.
Overview:
Low overhead [1] per-callsite memory allocation profiling. Not just for
debug kernels, overhead low enough to be deployed in production.
Example output:
root@moria-kvm:~# sort -rn /proc/allocinfo
127664128 31168 mm/page_ext.c:270 func:alloc_page_ext
56373248 4737 mm/slub.c:2259 func:alloc_slab_page
14880768 3633 mm/readahead.c:247 func:page_cache_ra_unbounded
14417920 3520 mm/mm_init.c:2530 func:alloc_large_system_hash
13377536 234 block/blk-mq.c:3421 func:blk_mq_alloc_rqs
11718656 2861 mm/filemap.c:1919 func:__filemap_get_folio
9192960 2800 kernel/fork.c:307 func:alloc_thread_stack_node
4206592 4 net/netfilter/nf_conntrack_core.c:2567 func:nf_ct_alloc_hashtable
4136960 1010 drivers/staging/ctagmod/ctagmod.c:20 [ctagmod] func:ctagmod_start
3940352 962 mm/memory.c:4214 func:alloc_anon_folio
2894464 22613 fs/kernfs/dir.c:615 func:__kernfs_new_node
...
Usage:
kconfig options:
- CONFIG_MEM_ALLOC_PROFILING
- CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT
- CONFIG_MEM_ALLOC_PROFILING_DEBUG
adds warnings for allocations that weren't accounted because of a
missing annotation
sysctl:
/proc/sys/vm/mem_profiling
Runtime info:
/proc/allocinfo
Notes:
[1]: Overhead
To measure the overhead we are comparing the following configurations:
(1) Baseline with CONFIG_MEMCG_KMEM=n
(2) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n)
(3) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y)
(4) Enabled at runtime (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n && /proc/sys/vm/mem_profiling=1)
(5) Baseline with CONFIG_MEMCG_KMEM=y && allocating with __GFP_ACCOUNT
(6) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n) && CONFIG_MEMCG_KMEM=y
(7) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y &&
CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y) && CONFIG_MEMCG_KMEM=y
Performance overhead:
To evaluate performance we implemented an in-kernel test executing
multiple get_free_page/free_page and kmalloc/kfree calls with allocation
sizes growing from 8 to 240 bytes with CPU frequency set to max and CPU
affinity set to a specific CPU to minimize the noise. Below are results
from running the test on Ubuntu 22.04.2 LTS with 6.8.0-rc1 kernel on
56 core Intel Xeon:
kmalloc pgalloc
(1 baseline) 6.764s 16.902s
(2 default disabled) 6.793s (+0.43%) 17.007s (+0.62%)
(3 default enabled) 7.197s (+6.40%) 23.666s (+40.02%)
(4 runtime enabled) 7.405s (+9.48%) 23.901s (+41.41%)
(5 memcg) 13.388s (+97.94%) 48.460s (+186.71%)
(6 def disabled+memcg) 13.332s (+97.10%) 48.105s (+184.61%)
(7 def enabled+memcg) 13.446s (+98.78%) 54.963s (+225.18%)
Memory overhead:
Kernel size:
text data bss dec diff
(1) 26515311 18890222 17018880 62424413
(2) 26524728 19423818 16740352 62688898 264485
(3) 26524724 19423818 16740352 62688894 264481
(4) 26524728 19423818 16740352 62688898 264485
(5) 26541782 18964374 16957440 62463596 39183
Memory consumption on a 56 core Intel CPU with 125GB of memory:
Code tags: 192 kB
PageExts: 262144 kB (256MB)
SlabExts: 9876 kB (9.6MB)
PcpuExts: 512 kB (0.5MB)
Total overhead is 0.2% of total memory.
Benchmarks:
Hackbench tests run 100 times:
hackbench -s 512 -l 200 -g 15 -f 25 -P
baseline disabled profiling enabled profiling
avg 0.3543 0.3559 (+0.0016) 0.3566 (+0.0023)
stdev 0.0137 0.0188 0.0077
hackbench -l 10000
baseline disabled profiling enabled profiling
avg 6.4218 6.4306 (+0.0088) 6.5077 (+0.0859)
stdev 0.0933 0.0286 0.0489
stress-ng tests:
stress-ng --class memory --seq 4 -t 60
stress-ng --class cpu --seq 4 -t 60
Results posted at: https://evilpiepirate.org/~kent/memalloc_prof_v4_stress-ng/
[2] https://lore.kernel.org/all/20240306182440.2003814-1-surenb@google.com/
This patch (of 37):
The next patch drops vmalloc.h from a system header in order to fix a
circular dependency; this adds it to all the files that were pulling it in
implicitly.
[kent.overstreet@linux.dev: fix arch/alpha/lib/memcpy.c]
Link: https://lkml.kernel.org/r/20240327002152.3339937-1-kent.overstreet@linux.dev
[surenb@google.com: fix arch/x86/mm/numa_32.c]
Link: https://lkml.kernel.org/r/20240402180933.1663992-1-surenb@google.com
[kent.overstreet@linux.dev: a few places were depending on sizes.h]
Link: https://lkml.kernel.org/r/20240404034744.1664840-1-kent.overstreet@linux.dev
[arnd@arndb.de: fix mm/kasan/hw_tags.c]
Link: https://lkml.kernel.org/r/20240404124435.3121534-1-arnd@kernel.org
[surenb@google.com: fix arc build]
Link: https://lkml.kernel.org/r/20240405225115.431056-1-surenb@google.com
Link: https://lkml.kernel.org/r/20240321163705.3067592-1-surenb@google.com
Link: https://lkml.kernel.org/r/20240321163705.3067592-2-surenb@google.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Tested-by: Kees Cook <keescook@chromium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Gary Guo <gary@garyguo.net>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Krzysztof Kozlowski
|
ffe6176b7f |
virtio: store owner from modules with register_virtio_driver()
Modules registering driver with register_virtio_driver() might forget to set .owner field. i2c-virtio.c for example has it missing. The field is used by some other kernel parts for reference counting (try_module_get()), so it is expected that drivers will set it. Solve the problem by moving this task away from the drivers to the core virtio code, just like we did for platform_driver in commit |
||
|
Xuan Zhuo
|
d5c0ed17fe |
virtio: packed: fix unmap leak for indirect desc table
When use_dma_api and premapped are true, then the do_unmap is false.
Because the do_unmap is false, vring_unmap_extra_packed is not called by
detach_buf_packed.
if (unlikely(vq->do_unmap)) {
curr = id;
for (i = 0; i < state->num; i++) {
vring_unmap_extra_packed(vq,
&vq->packed.desc_extra[curr]);
curr = vq->packed.desc_extra[curr].next;
}
}
So the indirect desc table is not unmapped. This causes the unmap leak.
So here, we check vq->use_dma_api instead. Synchronously, dma info is
updated based on use_dma_api judgment
This bug does not occur, because no driver use the premapped with
indirect.
Fixes:
|
||
|
Ricardo B. Marliere
|
2b666ee296 |
virtio: make virtio_bus const
Now that the driver core can properly handle constant struct bus_type, move the virtio_bus variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Message-Id: <20240204-bus_cleanup-virtio-v1-1-3bcb2212aaa0@marliere.net> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Jason Wang <jasowang@redhat.com> |
||
|
Zhu Lingshan
|
273ae08fa0 |
virtio_vdpa: create vqs with the actual size
The size of a virtqueue is a per vq configuration, this commit allows virtio_vdpa to create virtqueues with the actual size of a specific vq size that supported by the backend device. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Message-Id: <20240202163905.8834-9-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|
David Hildenbrand
|
310227f428 |
virtio: reenable config if freezing device failed
Currently, we don't reenable the config if freezing the device failed.
For example, virtio-mem currently doesn't support suspend+resume, and
trying to freeze the device will always fail. Afterwards, the device
will no longer respond to resize requests, because it won't get notified
about config changes.
Let's fix this by re-enabling the config if freezing fails.
Fixes:
|
||
|
Linus Torvalds
|
0b7359ccdd |
virtio: features, fixes
vdpa/mlx5: support for resumable vqs virtio_scsi: mq_poll support 3virtio_pmem: support SHMEM_REGION virtio_balloon: stay awake while adjusting balloon virtio: support for no-reset virtio PCI PM Fixes, cleanups. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmWmgP8PHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpcfgH/0RD2S+NFY0ZEJz8BuI6GjykzYnyRW9iyxcw epTLjPUcoEBttlw8TA+3PiPoNIJGfuU8Q4iKXJ8Jzql081tP9G1UxTIbj0v3Hx+q 0L2DUXfdAMYMLo5WQVl/PADV/10xLgExEh9jMqpU3IJIxVaLE/knD9ghRCDvDbs/ fOo3sSUGaNsSHYZs5bH73Q7cRKKmTLO+MzvHBbavFfz2fQ1b3vwecmJuQtAtK0JC 6JxH6Y38VfOl8jA6IHeEpGIHeF661HABkDDUh4UVEGOeyBl4E6ZcG4fjWSMinZ08 U3TbQLYOq10i8ki2LJKgoZHRv1HkxbM1Ogn0bsIh1hish8dPORM= =RWjR -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: - vdpa/mlx5: support for resumable vqs - virtio_scsi: mq_poll support - 3virtio_pmem: support SHMEM_REGION - virtio_balloon: stay awake while adjusting balloon - virtio: support for no-reset virtio PCI PM - Fixes, cleanups * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vdpa/mlx5: Add mkey leak detection vdpa/mlx5: Introduce reference counting to mrs vdpa/mlx5: Use vq suspend/resume during .set_map vdpa/mlx5: Mark vq state for modification in hw vq vdpa/mlx5: Mark vq addrs for modification in hw vq vdpa/mlx5: Introduce per vq and device resume vdpa/mlx5: Allow modifying multiple vq fields in one modify command vdpa/mlx5: Expose resumable vq capability vdpa: Block vq property changes in DRIVER_OK vdpa: Track device suspended state scsi: virtio_scsi: Add mq_poll support virtio_pmem: support feature SHMEM_REGION virtio_balloon: stay awake while adjusting balloon vdpa: Remove usage of the deprecated ida_simple_xx() API virtio: Add support for no-reset virtio PCI PM virtio_net: fix missing dma unmap for resize vhost-vdpa: account iommu allocations vdpa: Fix an error handling path in eni_vdpa_probe() |
||
|
Linus Torvalds
|
244aefb1c6 |
VFIO updates for v6.8-rc1
- Add debugfs support, initially used for reporting device migration
state. (Longfang Liu)
- Fixes and support for migration dirty tracking across multiple IOVA
regions in the pds-vfio-pci driver. (Brett Creeley)
- Improved IOMMU allocation accounting visibility. (Pasha Tatashin)
- Virtio infrastructure and a new virtio-vfio-pci variant driver, which
provides emulation of a legacy virtio interfaces on modern virtio
hardware for virtio-net VF devices where the PF driver exposes
support for legacy admin queues, ie. an emulated IO BAR on an SR-IOV
VF to provide driver ABI compatibility to legacy devices.
(Yishai Hadas & Feng Liu)
- Migration fixes for the hisi-acc-vfio-pci variant driver.
(Shameer Kolothum)
- Kconfig dependency fix for new virtio-vfio-pci variant driver.
(Arnd Bergmann)
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Merge tag 'vfio-v6.8-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Add debugfs support, initially used for reporting device migration
state (Longfang Liu)
- Fixes and support for migration dirty tracking across multiple IOVA
regions in the pds-vfio-pci driver (Brett Creeley)
- Improved IOMMU allocation accounting visibility (Pasha Tatashin)
- Virtio infrastructure and a new virtio-vfio-pci variant driver, which
provides emulation of a legacy virtio interfaces on modern virtio
hardware for virtio-net VF devices where the PF driver exposes
support for legacy admin queues, ie. an emulated IO BAR on an SR-IOV
VF to provide driver ABI compatibility to legacy devices (Yishai
Hadas & Feng Liu)
- Migration fixes for the hisi-acc-vfio-pci variant driver (Shameer
Kolothum)
- Kconfig dependency fix for new virtio-vfio-pci variant driver (Arnd
Bergmann)
* tag 'vfio-v6.8-rc1' of https://github.com/awilliam/linux-vfio: (22 commits)
vfio/virtio: fix virtio-pci dependency
hisi_acc_vfio_pci: Update migration data pointer correctly on saving/resume
vfio/virtio: Declare virtiovf_pci_aer_reset_done() static
vfio/virtio: Introduce a vfio driver over virtio devices
vfio/pci: Expose vfio_pci_core_iowrite/read##size()
vfio/pci: Expose vfio_pci_core_setup_barmap()
virtio-pci: Introduce APIs to execute legacy IO admin commands
virtio-pci: Initialize the supported admin commands
virtio-pci: Introduce admin commands
virtio-pci: Introduce admin command sending function
virtio-pci: Introduce admin virtqueue
virtio: Define feature bit for administration virtqueue
vfio/type1: account iommu allocations
vfio/pds: Add multi-region support
vfio/pds: Move seq/ack bitmaps into region struct
vfio/pds: Pass region info to relevant functions
vfio/pds: Move and rename region specific info
vfio/pds: Only use a single SGL for both seq and ack
vfio/pds: Fix calculations in pds_vfio_dirty_sync
MAINTAINERS: Add vfio debugfs interface doc link
...
|
||
|
David Stevens
|
b12fbc3f78 |
virtio_balloon: stay awake while adjusting balloon
A virtio_balloon's parent device may be configured so that a configuration change interrupt is a wakeup event. Extend the processing of such a wakeup event until the balloon finishes inflating or deflating by calling pm_stay_awake/pm_relax in the virtio_balloon driver. Note that these calls are no-ops if the parent device doesn't support wakeup events or if the wakeup events are not enabled. This change allows the guest to use system power states such as s2idle without running the risk the virtio_balloon's cooperative memory management becoming unresponsive to the host's requests. Tested-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: David Stevens <stevensd@chromium.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Message-Id: <20240110021925.1137333-1-stevensd@google.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|
Linus Torvalds
|
fb46e22a9e |
Many singleton patches against the MM code. The patch series which
are included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the
series
"maple_tree: add mt_free_one() and mt_attr() helpers"
"Some cleanups of maple tree"
- In the series "mm: use memmap_on_memory semantics for dax/kmem"
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few
fixes) in the patch series
"Add folio_zero_tail() and folio_fill_tail()"
"Make folio_start_writeback return void"
"Fix fault handler's handling of poisoned tail pages"
"Convert aops->error_remove_page to ->error_remove_folio"
"Finish two folio conversions"
"More swap folio conversions"
- Kefeng Wang has also contributed folio-related work in the series
"mm: cleanup and use more folio in page fault"
- Jim Cromie has improved the kmemleak reporting output in the
series "tweak kmemleak report format".
- In the series "stackdepot: allow evicting stack traces" Andrey
Konovalov to permits clients (in this case KASAN) to cause
eviction of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series "mm:
page_alloc: fixes for high atomic reserve caluculations".
- Dmitry Rokosov has added to the samples/ dorectory some sample
code for a userspace memcg event listener application. See the
series "samples: introduce cgroup events listeners".
- Some mapletree maintanance work from Liam Howlett in the series
"maple_tree: iterator state changes".
- Nhat Pham has improved zswap's approach to writeback in the
series "workload-specific and memory pressure-driven zswap
writeback".
- DAMON/DAMOS feature and maintenance work from SeongJae Park in
the series
"mm/damon: let users feed and tame/auto-tune DAMOS"
"selftests/damon: add Python-written DAMON functionality tests"
"mm/damon: misc updates for 6.8"
- Yosry Ahmed has improved memcg's stats flushing in the series
"mm: memcg: subtree stats flushing and thresholds".
- In the series "Multi-size THP for anonymous memory" Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series "More buffer_head
cleanups".
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
"userfaultfd move option". UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a "KSM Advisor", in the series
"mm/ksm: Add ksm advisor". This is a governor which tunes KSM's
scanning aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory
use in the series "mm/zswap: dstmem reuse optimizations and
cleanups".
- Matthew Wilcox has performed some maintenance work on the
writeback code, both code and within filesystems. The series is
"Clean up the writeback paths".
- Andrey Konovalov has optimized KASAN's handling of alloc and
free stack traces for secondary-level allocators, in the series
"kasan: save mempool stack traces".
- Andrey also performed some KASAN maintenance work in the series
"kasan: assorted clean-ups".
- David Hildenbrand has gone to town on the rmap code. Cleanups,
more pte batching, folio conversions and more. See the series
"mm/rmap: interface overhaul".
- Kinsey Ho has contributed some maintenance work on the MGLRU
code in the series "mm/mglru: Kconfig cleanup".
- Matthew Wilcox has contributed lruvec page accounting code
cleanups in the series "Remove some lruvec page accounting
functions".
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Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the series
'maple_tree: add mt_free_one() and mt_attr() helpers'
'Some cleanups of maple tree'
- In the series 'mm: use memmap_on_memory semantics for dax/kmem'
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few fixes)
in the patch series
'Add folio_zero_tail() and folio_fill_tail()'
'Make folio_start_writeback return void'
'Fix fault handler's handling of poisoned tail pages'
'Convert aops->error_remove_page to ->error_remove_folio'
'Finish two folio conversions'
'More swap folio conversions'
- Kefeng Wang has also contributed folio-related work in the series
'mm: cleanup and use more folio in page fault'
- Jim Cromie has improved the kmemleak reporting output in the series
'tweak kmemleak report format'.
- In the series 'stackdepot: allow evicting stack traces' Andrey
Konovalov to permits clients (in this case KASAN) to cause eviction
of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series 'mm:
page_alloc: fixes for high atomic reserve caluculations'.
- Dmitry Rokosov has added to the samples/ dorectory some sample code
for a userspace memcg event listener application. See the series
'samples: introduce cgroup events listeners'.
- Some mapletree maintanance work from Liam Howlett in the series
'maple_tree: iterator state changes'.
- Nhat Pham has improved zswap's approach to writeback in the series
'workload-specific and memory pressure-driven zswap writeback'.
- DAMON/DAMOS feature and maintenance work from SeongJae Park in the
series
'mm/damon: let users feed and tame/auto-tune DAMOS'
'selftests/damon: add Python-written DAMON functionality tests'
'mm/damon: misc updates for 6.8'
- Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
memcg: subtree stats flushing and thresholds'.
- In the series 'Multi-size THP for anonymous memory' Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series 'More buffer_head
cleanups'.
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
Add ksm advisor'. This is a governor which tunes KSM's scanning
aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory use
in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.
- Matthew Wilcox has performed some maintenance work on the writeback
code, both code and within filesystems. The series is 'Clean up the
writeback paths'.
- Andrey Konovalov has optimized KASAN's handling of alloc and free
stack traces for secondary-level allocators, in the series 'kasan:
save mempool stack traces'.
- Andrey also performed some KASAN maintenance work in the series
'kasan: assorted clean-ups'.
- David Hildenbrand has gone to town on the rmap code. Cleanups, more
pte batching, folio conversions and more. See the series 'mm/rmap:
interface overhaul'.
- Kinsey Ho has contributed some maintenance work on the MGLRU code
in the series 'mm/mglru: Kconfig cleanup'.
- Matthew Wilcox has contributed lruvec page accounting code cleanups
in the series 'Remove some lruvec page accounting functions'"
* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
mm, treewide: introduce NR_PAGE_ORDERS
selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
selftests/mm: skip test if application doesn't has root privileges
selftests/mm: conform test to TAP format output
selftests: mm: hugepage-mmap: conform to TAP format output
selftests/mm: gup_test: conform test to TAP format output
mm/selftests: hugepage-mremap: conform test to TAP format output
mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
mm/memcontrol: remove __mod_lruvec_page_state()
mm/khugepaged: use a folio more in collapse_file()
slub: use a folio in __kmalloc_large_node
slub: use folio APIs in free_large_kmalloc()
slub: use alloc_pages_node() in alloc_slab_page()
mm: remove inc/dec lruvec page state functions
mm: ratelimit stat flush from workingset shrinker
kasan: stop leaking stack trace handles
mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
mm/mglru: add dummy pmd_dirty()
...
|
||
|
Kirill A. Shutemov
|
5e0a760b44 |
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
commit
|
||
|
David Stevens
|
dff4fa0e57 |
virtio: Add support for no-reset virtio PCI PM
If a virtio_pci_device supports native PCI power management and has the No_Soft_Reset bit set, then skip resetting and reinitializing the device when suspending and restoring the device. This allows system-wide low power states like s2idle to be used in systems with stateful virtio devices that can't simply be re-initialized (e.g. virtio-fs). Signed-off-by: David Stevens <stevensd@chromium.org> Message-Id: <20231208070754.3132339-1-stevensd@chromium.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> |
||
|
Yishai Hadas
|
c3fc3e098b |
virtio-pci: Introduce APIs to execute legacy IO admin commands
Introduce APIs to execute legacy IO admin commands. It includes: io_legacy_read/write for both common and the device configuration, io_legacy_notify_info. In addition, exposing an API to check whether the legacy IO commands are supported. (i.e. virtio_pci_admin_has_legacy_io()). Those APIs will be used by the next patches from this series. Note: Unlike modern drivers which support hardware virtio devices, legacy drivers assume software-based devices: e.g. they don't use proper memory barriers on ARM, use big endian on PPC, etc. X86 drivers are mostly ok though, more or less by chance. For now, only support legacy IO on X86. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20231219093247.170936-7-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
||
|
Yishai Hadas
|
f51e146f1e |
virtio-pci: Initialize the supported admin commands
Initialize the supported admin commands upon activating the admin queue. The supported commands are saved as part of the admin queue context. Next patches in this series will expose APIs to use them. Reviewed-by: Feng Liu <feliu@nvidia.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20231219093247.170936-6-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
||
|
Feng Liu
|
92792ac752 |
virtio-pci: Introduce admin command sending function
Add support for sending admin command through admin virtqueue interface. Abort any inflight admin commands once device reset completes. Activate admin queue when device becomes ready; deactivate on device reset. To comply to the below specification statement [1], the admin virtqueue is activated for upper layer users only after setting DRIVER_OK status. [1] The driver MUST NOT send any buffer available notifications to the device before setting DRIVER_OK. Signed-off-by: Feng Liu <feliu@nvidia.com> Reviewed-by: Parav Pandit <parav@nvidia.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20231219093247.170936-4-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
||
|
Feng Liu
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fd27ef6b44 |
virtio-pci: Introduce admin virtqueue
Introduce support for the admin virtqueue. By negotiating VIRTIO_F_ADMIN_VQ feature, driver detects capability and creates one administration virtqueue. Administration virtqueue implementation in virtio pci generic layer, enables multiple types of upper layer drivers such as vfio, net, blk to utilize it. Signed-off-by: Feng Liu <feliu@nvidia.com> Reviewed-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Link: https://lore.kernel.org/r/20231219093247.170936-3-yishaih@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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Xuan Zhuo
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1f475cd572 |
virtio_ring: fix syncs DMA memory with different direction
Now the APIs virtqueue_dma_sync_single_range_for_{cpu,device} ignore
the parameter 'dir', that is a mistake.
[ 6.101666] ------------[ cut here ]------------
[ 6.102079] DMA-API: virtio-pci 0000:00:04.0: device driver syncs DMA memory with different direction [device address=0x00000000ae010000] [size=32752 bytes] [mapped with DMA_FROM_DEVICE] [synced with DMA_BIDIRECTIONAL]
[ 6.103630] WARNING: CPU: 6 PID: 0 at kernel/dma/debug.c:1125 check_sync+0x53e/0x6c0
[ 6.107420] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G E 6.6.0+ #290
[ 6.108030] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
[ 6.108936] RIP: 0010:check_sync+0x53e/0x6c0
[ 6.109289] Code: 24 10 e8 f5 d9 74 00 4c 8b 4c 24 10 4c 8b 44 24 18 48 8b 4c 24 20 48 89 c6 41 56 4c 89 ea 48 c7 c7 b0 f1 50 82 e8 32 fc f3 ff <0f> 0b 48 c7 c7 48 4b 4a 82 e8 74 d9 fc ff 8b 73 4c 48 8d 7b 50 31
[ 6.110750] RSP: 0018:ffffc90000180cd8 EFLAGS: 00010092
[ 6.111178] RAX: 00000000000000ce RBX: ffff888100aa5900 RCX: 0000000000000000
[ 6.111744] RDX: 0000000000000104 RSI: ffffffff824c3208 RDI: 00000000ffffffff
[ 6.112316] RBP: ffffc90000180d40 R08: 0000000000000000 R09: 00000000fffeffff
[ 6.112893] R10: ffffc90000180b98 R11: ffffffff82f63308 R12: ffffffff83d5af00
[ 6.113460] R13: ffff888100998200 R14: ffffffff824a4b5f R15: 0000000000000286
[ 6.114027] FS: 0000000000000000(0000) GS:ffff88842fd80000(0000) knlGS:0000000000000000
[ 6.114665] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.115128] CR2: 00007f10f1e03030 CR3: 0000000108272004 CR4: 0000000000770ee0
[ 6.115701] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6.116272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6.116842] PKRU: 55555554
[ 6.117069] Call Trace:
[ 6.117275] <IRQ>
[ 6.117452] ? __warn+0x84/0x140
[ 6.117727] ? check_sync+0x53e/0x6c0
[ 6.118034] ? __report_bug+0xea/0x100
[ 6.118353] ? check_sync+0x53e/0x6c0
[ 6.118653] ? report_bug+0x41/0xc0
[ 6.118944] ? handle_bug+0x3c/0x70
[ 6.119237] ? exc_invalid_op+0x18/0x70
[ 6.119551] ? asm_exc_invalid_op+0x1a/0x20
[ 6.119900] ? check_sync+0x53e/0x6c0
[ 6.120199] ? check_sync+0x53e/0x6c0
[ 6.120499] debug_dma_sync_single_for_cpu+0x5c/0x70
[ 6.120906] ? dma_sync_single_for_cpu+0xb7/0x100
[ 6.121291] virtnet_rq_unmap+0x158/0x170 [virtio_net]
[ 6.121716] virtnet_receive+0x196/0x220 [virtio_net]
[ 6.122135] virtnet_poll+0x48/0x1b0 [virtio_net]
[ 6.122524] __napi_poll+0x29/0x1b0
[ 6.123083] net_rx_action+0x282/0x360
[ 6.123612] __do_softirq+0xf3/0x2fb
[ 6.124138] __irq_exit_rcu+0x8e/0xf0
[ 6.124663] common_interrupt+0xbc/0xe0
[ 6.125202] </IRQ>
We need to enable CONFIG_DMA_API_DEBUG and work with need sync mode(such
as swiotlb) to reproduce this warn.
Fixes:
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Linus Torvalds
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372bed5fbb |
vhost,virtio,vdpa,firmware: bugfixes
bugfixes all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmVT1w0PHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpYXMH/AxTzofnpIJOvmY0QYLbBg3+wu0ml4X1pvJc Ia2pm5NZLTPucesw+AFM1q8YIiRX5mBRTmxtGLFzqiC+miAKPvMJK2hQe1jlNqgM 7zBb0jeHvURvo4rvDi8a2Xvf6T2ypGapBhmcNy7VtEugLrXGHGMMzjE3IS1/Zsbm AK70P0ujTpLZtp4TFy2qqZoaikijbAdHhu2GTo1KfFh3RcwSc1uhbrtoTHUQ42bw 0nXz8eLyuu9VmUryVgLy+j9pnS9KDMNhVCpjpVIHD4iI9L6sQVj8fwc/Bnxq8mh7 yDcagvcIK54M786cAmLWC+zQu7feMQ8FcC2zduJT+Yl2X4fX04E= =xFJf -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio fixes from Michael Tsirkin: "Bugfixes all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vhost-vdpa: fix use after free in vhost_vdpa_probe() virtio_pci: Switch away from deprecated irq_set_affinity_hint riscv, qemu_fw_cfg: Add support for RISC-V architecture vdpa_sim_blk: allocate the buffer zeroed virtio_pci: move structure to a header |
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Linus Torvalds
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77fa2fbe87 |
vhost,virtio,vdpa: features, fixes, cleanups
vdpa/mlx5: VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK new maintainer vdpa: support for vq descriptor mappings decouple reset of iotlb mapping from device reset fixes, cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmVCUMYPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRp4L0H/RKcnNXPRqzhhBI1XVQ11Z8CO8WjovcmJalu ADHNEGmvuWnY79fp9eLiZ4iVaTx1qbzqIB5Q500DJ65jh71W7UQ8ww6CGjNUoRGs Zoe4G09WoOf4bvDZZzVV7ml/AzMdsHWSZK8pxY3QI9CsC9Zfp9hg20QYxPylCqYx SIJx7w2MkoojfmtOHRx1WUxaQz99yfU4Z0C5PxtRE1HGN6/a1aY0P0CAl5jq8uCK U5sCRsfCmP7VKlspeEddMiPA35ADbCiysSobCbwGVQEs5cHpMUX7KWa+oV0tF/PY 9uyJb2rJy6zG3tXmL4XNib665ZR86HX6qiWRfm2nBQQStuHaJyg= =mXgo -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: "vhost,virtio,vdpa: features, fixes, cleanups. vdpa/mlx5: - VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK - new maintainer vdpa: - support for vq descriptor mappings - decouple reset of iotlb mapping from device reset and fixes, cleanups all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits) vdpa_sim: implement .reset_map support vdpa/mlx5: implement .reset_map driver op vhost-vdpa: clean iotlb map during reset for older userspace vdpa: introduce .compat_reset operation callback vhost-vdpa: introduce IOTLB_PERSIST backend feature bit vhost-vdpa: reset vendor specific mapping to initial state in .release vdpa: introduce .reset_map operation callback virtio_pci: add check for common cfg size virtio-blk: fix implicit overflow on virtio_max_dma_size virtio_pci: add build offset check for the new common cfg items virtio: add definition of VIRTIO_F_NOTIF_CONFIG_DATA feature bit vduse: make vduse_class constant vhost-scsi: Spelling s/preceeding/preceding/g virtio: kdoc for struct virtio_pci_modern_device vdpa: Update sysfs ABI documentation MAINTAINERS: Add myself as mlx5_vdpa driver virtio-balloon: correct the comment of virtballoon_migratepage() mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK vdpa/mlx5: Update cvq iotlb mapping on ASID change vdpa/mlx5: Make iotlb helper functions more generic ... |