linux-next/drivers/nvdimm
Dan Williams f8669f1d6a nvdimm/blk: Delete the block-aperture window driver
Block Aperture Window support was an attempt to layer an error model
over PMEM for platforms that did not support machine-check-recovery.
However, it was abandoned before it ever shipped, and only ever existed
in the ACPI specification. Meanwhile Linux has carried a large pile of
dead code for non-shipping infrastructure. For years it has been off to
the side out of the way, but now CXL and recent directions with DAX
support have the potential to collide with this code.

In preparation for adding discontiguous namespace support, a
pre-requisite for the nvdimm subsystem to replace device-mapper for
striping + concatenation use cases, delete BLK aperture support.

On the obscure chance that some hardware vendor shipped support for this
mode, note that the driver will still keep BLK space reserved in the
label area. So an end user in this case would still have the opportunity
to report the regression to get BLK-mode support restored without
risking the data they have on that device.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/164688416668.2879318.16903178375774275120.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2022-03-11 15:53:12 -08:00
..
badrange.c mm/memremap_pages: convert to 'struct range' 2020-10-13 18:38:28 -07:00
btt_devs.c libnvdimm/labels: Add uuid helpers 2021-09-21 13:44:55 -07:00
btt.c for-5.16/drivers-2021-11-09 2021-11-09 11:24:08 -08:00
btt.h nvdimm-btt: convert to blk_alloc_disk/blk_cleanup_disk 2021-06-01 07:42:23 -06:00
bus.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
claim.c libnvdimm: Cleanup include of badblocks.h 2020-12-15 21:47:45 -08:00
core.c cxl for v5.16 2021-11-08 11:49:48 -08:00
dax_devs.c libnvdimm: Move attribute groups to device type 2019-11-17 09:17:38 -08:00
dimm_devs.c libnvdimm: Export nvdimm shutdown helper, nvdimm_delete() 2021-06-15 16:47:22 -07:00
dimm.c libnvdimm: Make remove callback return void 2021-02-16 19:35:29 -08:00
e820.c libnvdimm/e820: Retrieve and populate correct 'target_node' info 2020-02-18 10:28:05 -08:00
Kconfig nvdimm/blk: Delete the block-aperture window driver 2022-03-11 15:53:12 -08:00
label.c libnvdimm/labels: Introduce CXL labels 2021-09-21 13:44:56 -07:00
label.h libnvdimm/labels: Introduce CXL labels 2021-09-21 13:44:56 -07:00
Makefile nvdimm/blk: Delete the block-aperture window driver 2022-03-11 15:53:12 -08:00
namespace_devs.c libnvdimm/label: Add a helper for nlabel validation 2021-09-21 13:44:55 -07:00
nd_perf.c drivers/nvdimm: Add perf interface to expose nvdimm performance stats 2022-03-09 17:50:42 -08:00
nd_virtio.c virtio_pmem: fix sparse warning 2019-07-16 19:44:26 -07:00
nd-core.h libnvdimm/labels: Add uuid helpers 2021-09-21 13:44:55 -07:00
nd.h libnvdimm/labels: Introduce CXL labels 2021-09-21 13:44:56 -07:00
of_pmem.c powerpc/pmem: Initialize pmem device on newer hardware 2020-07-16 13:00:23 +10:00
pfn_devs.c libnvdimm/labels: Add uuid helpers 2021-09-21 13:44:55 -07:00
pfn.h libnvdimm/namespace: Enforce memremap_compat_align() 2020-03-17 12:23:21 -07:00
pmem.c dax: remove the copy_from_iter and copy_to_iter methods 2021-12-18 08:04:53 -08:00
pmem.h libnvdimm, pmem: Restore page attributes when clearing errors 2018-08-20 09:22:45 -07:00
region_devs.c nvdimm/region: Fix default alignment for small regions 2022-03-11 15:53:12 -08:00
region.c libnvdimm: Make remove callback return void 2021-02-16 19:35:29 -08:00
security.c libnvdimm for 5.9 2020-08-11 10:59:19 -07:00
virtio_pmem.c virtio: wrap config->reset calls 2022-01-14 18:50:52 -05:00
virtio_pmem.h virtio-pmem: Add virtio pmem driver 2019-07-05 15:19:10 -07:00