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linux/arch/arm/mm
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Ard Biesheuvel 7b9896c352 ARM: percpu: add SMP_ON_UP support 
Permit the use of the TPIDRPRW system register for carrying the per-CPU
offset in generic SMP configurations that also target non-SMP capable
ARMv6 cores. This uses the SMP_ON_UP code patching framework to turn all
TPIDRPRW accesses into reads/writes of entry #0 in the __per_cpu_offset
array.

While at it, switch over some existing direct TPIDRPRW accesses in asm
code to invocations of a new helper that is patched in the same way when
necessary.

Note that CPU_V6+SMP without SMP_ON_UP results in a kernel that does not
boot on v6 CPUs without SMP extensions, so add this dependency to
Kconfig as well.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
2021-12-06 12:49:17 +01:00
..
abort-ev4.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev4t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev5t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev5tj.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev6.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev7.S
ARM: 9091/1: Revert "mm: qsd8x50: Fix incorrect permission faults"
2021-06-13 18:16:43 +01:00
abort-lv4t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-macro.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-nommu.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
alignment.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
cache-b15-rac.c
ARM: mm: Remove virtual address print from B15 RAC driver
2020-05-06 11:12:12 -07:00
cache-fa.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-feroceon-l2.c
ARM: 8416/1: Feroceon: use of_iomap() to map register base
2015-08-18 14:00:30 +01:00
cache-l2x0-pmu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
cache-l2x0.c
ARM: 9007/1: l2c: fix prefetch bits init in L2X0_AUX_CTRL using DT values
2020-09-15 14:35:53 +01:00
cache-nop.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-tauros2.c
ARM: l2c: tauros2: use descriptive definitions for register bits
2015-11-26 22:12:26 +00:00
cache-tauros3.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 171
2019-05-30 11:26:39 -07:00
cache-uniphier.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
cache-v4.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-v4wb.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-v4wt.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-v6.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache-v7.S
ARM: 9059/1: cache-v7: get rid of mini-stack
2021-03-09 10:25:18 +00:00
cache-v7m.S
sched/rt, ARM: Use CONFIG_PREEMPTION
2019-12-08 14:37:32 +01:00
cache-xsc3l2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
context.c
ARM: 9150/1: Fix PID_IN_CONTEXTIDR regression when THREAD_INFO_IN_TASK=y
2021-10-30 11:24:36 +01:00
copypage-fa.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
copypage-feroceon.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
copypage-v4mc.c
mm: move page_mapping_file to pagemap.h
2021-04-30 11:20:37 -07:00
copypage-v4wb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
copypage-v4wt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
copypage-v6.c
mm: move page_mapping_file to pagemap.h
2021-04-30 11:20:37 -07:00
copypage-xsc3.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
copypage-xscale.c
mm: move page_mapping_file to pagemap.h
2021-04-30 11:20:37 -07:00
dma-mapping-nommu.c
ARM/nommu: use the generic dma-direct code for non-coherent devices
2021-08-18 16:24:10 +02:00
dma-mapping.c
ARM/dma-mapping: don't set failed sg dma_address to DMA_MAPPING_ERROR
2021-08-09 17:13:05 +02:00
dma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dump.c
ARM: 9073/1: ptdump: add __init section marker to three functions
2021-04-18 19:15:12 +01:00
extable.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fault-armv.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
fault.c
ARM: 9131/1: mm: Fix PXN process with LPAE feature
2021-10-19 10:35:43 +01:00
fault.h
ARM: 9131/1: mm: Fix PXN process with LPAE feature
2021-10-19 10:35:43 +01:00
flush.c
mm: remove flush_kernel_dcache_page
2021-09-03 09:58:13 -07:00
fsr-2level.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fsr-3level.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hugetlbpage.c
mm: remove unneeded includes of <asm/pgalloc.h>
2020-08-07 11:33:26 -07:00
idmap.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
init.c
memblock: rename memblock_free to memblock_phys_free
2021-11-06 13:30:41 -07:00
iomap.c
ARM: 8923/1: mm: include <asm/vga.h> for vga_base
2019-10-31 16:58:54 +00:00
ioremap.c
ARM: add __arm_iomem_set_ro() to write-protect ioremapped area
2021-10-19 10:30:56 +01:00
kasan_init.c
arm64 fixes for -rc1
2021-11-10 11:29:30 -08:00
Kconfig
ARM: percpu: add SMP_ON_UP support
2021-12-06 12:49:17 +01:00
l2c-common.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
l2c-l2x0-resume.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile
ARM updates for 5.11:
2020-12-22 13:34:27 -08:00
mm.h
mm: pgtable: add shortcuts for accessing kernel PMD and PTE
2020-06-09 09:39:13 -07:00
mmap.c
arm: Use the generic devmem_is_allowed()
2020-12-11 12:28:24 -08:00
mmu.c
ARM: 9155/1: fix early early_iounmap()
2021-11-12 12:49:36 +00:00
nommu.c
mm: remove flush_kernel_dcache_page
2021-09-03 09:58:13 -07:00
pabort-legacy.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pabort-v6.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pabort-v7.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pageattr.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
pgd.c
ARM: 9016/2: Initialize the mapping of KASan shadow memory
2020-10-27 12:11:10 +00:00
physaddr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pmsa-v7.c
ARM: 9069/1: NOMMU: Fix conversion for_each_membock() to for_each_mem_range()
2021-03-25 10:25:20 +00:00
pmsa-v8.c
ARM: 9069/1: NOMMU: Fix conversion for_each_membock() to for_each_mem_range()
2021-03-25 10:25:20 +00:00
proc-arm7tdmi.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm9tdmi.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm720.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm740.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm920.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm922.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm925.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm926.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm940.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm946.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm1020.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm1020e.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm1022.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-arm1026.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-fa526.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-feroceon.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-macros.S
Merge branches 'devel-stable' and 'misc' into for-linus
2021-11-02 09:04:22 +00:00
proc-mohawk.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-sa110.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-sa1100.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-syms.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
proc-v6.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-v7-2level.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
proc-v7-3level.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
proc-v7-bugs.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
proc-v7.S
ARM: 9059/1: cache-v7: get rid of mini-stack
2021-03-09 10:25:18 +00:00
proc-v7m.S
ARM: 8933/1: replace Sun/Solaris style flag on section directive
2019-11-15 22:21:19 +00:00
proc-xsc3.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
proc-xscale.S
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
ptdump_debugfs.c
ARM: 9074/1: ptdump: convert to DEFINE_SHOW_ATTRIBUTE
2021-04-18 19:15:13 +01:00
pv-fixup-asm.S
ARM: 9104/2: Fix Keystone 2 kernel mapping regression
2021-08-10 12:17:25 +01:00
tcm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194
2019-05-30 11:29:22 -07:00
tlb-fa.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
tlb-v4.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
tlb-v4wb.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
tlb-v4wbi.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
tlb-v6.S
mm: update legacy flush_tlb_* to use vma
2021-06-29 10:53:52 -07:00
tlb-v7.S
mm: update legacy flush_tlb_* to use vma
2021-06-29 10:53:52 -07:00