AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/nvdimm
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Dan Williams bfb34527a3 libnvdimm, pfn: fix memmap reservation size versus 4K alignment 
When vmemmap_populate() allocates space for the memmap it does so in 2MB
sized chunks. The libnvdimm-pfn driver incorrectly accounts for this
when the alignment of the device is set to 4K. When this happens we
trigger memory allocation failures in altmap_alloc_block_buf() and
trigger warnings of the form:

 WARNING: CPU: 0 PID: 3376 at arch/x86/mm/init_64.c:656 arch_add_memory+0xe4/0xf0
 [..]
 Call Trace:
  dump_stack+0x86/0xc3
  __warn+0xcb/0xf0
  warn_slowpath_null+0x1d/0x20
  arch_add_memory+0xe4/0xf0
  devm_memremap_pages+0x29b/0x4e0

Fixes: 315c562536 ("libnvdimm, pfn: add 'align' attribute, default to HPAGE_SIZE")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2017-02-04 14:47:31 -08:00
..
blk.c libnvdimm for 4.8 2016-07-28 17:38:16 -07:00
btt_devs.c nvdimm, btt: add a size attribute for BTTs 2016-08-08 09:26:14 -07:00
btt.c nvdimm, btt: add a size attribute for BTTs 2016-08-08 09:26:14 -07:00
btt.h
bus.c acpi, nfit, libnvdimm: fix / harden ars_status output length handling 2016-12-06 16:08:10 -08:00
claim.c libnvdimm: fix mishandled nvdimm_clear_poison() return value 2016-12-16 08:10:31 -08:00
core.c libnvdimm: use generic iostat interfaces 2016-10-19 08:53:26 -07:00
dax_devs.c libnvdimm, dax: autodetect support 2016-05-20 22:02:57 -07:00
dimm_devs.c libnvdimm: allow a platform to force enable label support 2016-10-19 08:57:33 -07:00
dimm.c libnvdimm: allow a platform to force enable label support 2016-10-19 08:57:33 -07:00
e820.c libnvdimm, e820: use module_platform_driver 2016-12-05 08:52:21 -08:00
Kconfig Linux 4.9-rc4 2016-11-18 16:13:41 -07:00
label.c nvdimm: use the right length of "pmem" 2016-11-11 20:37:42 -08:00
label.h
Makefile libnvdimm, dax: introduce device-dax infrastructure 2016-05-09 15:35:42 -07:00
namespace_devs.c libnvdimm, namespace: do not delete namespace-id 0 2017-01-31 18:18:21 -08:00
nd-core.h libnvdimm, namespace: allow creation of multiple pmem-namespaces per region 2016-10-07 09:22:53 -07:00
nd.h libnvdimm: allow a platform to force enable label support 2016-10-19 08:57:33 -07:00
pfn_devs.c libnvdimm, pfn: fix memmap reservation size versus 4K alignment 2017-02-04 14:47:31 -08:00
pfn.h libnvdimm, dax: autodetect support 2016-05-20 22:02:57 -07:00
pmem.c pmem: return EIO on read_pmem() failure 2017-01-12 16:40:29 -08:00
pmem.h pmem: kill __pmem address space 2016-07-12 19:25:38 -07:00
region_devs.c libnvdimm: replace mutex_is_locked() warnings with lockdep_assert_held 2016-12-15 20:04:31 -08:00
region.c libnvdimm: keep region data alive over namespace removal 2016-07-11 16:13:41 -07:00