linux-stable.git/drivers/edac, branch linux-5.14.y

EDAC/amd64: Handle three rank interleaving mode

2021-11-17T10:04:04+00:00

[ Upstream commit 9f4873fb6af7966de8fcbd95c36b61351c1c4b1f ]

AMD Rome systems and later support interleaving between three identical
ranks within a channel.

Check for this mode by counting the number of enabled chip selects and
comparing their masks. If there are exactly three enabled chip selects
and their masks are identical, then three rank interleaving is enabled.

The size of a rank is determined from its mask value. However, three
rank interleaving doesn't follow the method of swapping an interleave
bit with the most significant bit. Rather, the interleave bit is flipped
and the most significant bit remains the same. There is only a single
interleave bit in this case.

Account for this when determining the chip select size by keeping the
most significant bit at its original value and ignoring any zero bits.
This will return a full bitmask in [MSB:1].

Fixes: e53a3b267fb0 ("EDAC/amd64: Find Chip Select memory size using Address Mask")
Signed-off-by: Yazen Ghannam 
Signed-off-by: Borislav Petkov 
Link: https://lkml.kernel.org/r/20211005154419.2060504-1-yazen.ghannam@amd.com
Signed-off-by: Sasha Levin

EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell

2021-11-17T10:03:33+00:00

commit 537bddd069c743759addf422d0b8f028ff0f8dbc upstream.

The computation of TOHM is off by one bit. This missed bit results in
too low a value for TOHM, which can cause errors in regular memory to
incorrectly report:

  EDAC MC0: 1 CE Error at MMIOH area, on addr 0x000000207fffa680 on any memory

Fixes: 50d1bb93672f ("sb_edac: add support for Haswell based systems")
Cc: stable@vger.kernel.org
Reported-by: Meeta Saggi 
Signed-off-by: Eric Badger 
Signed-off-by: Tony Luck 
Link: https://lore.kernel.org/r/20211010170127.848113-1-ebadger@purestorage.com
Signed-off-by: Greg Kroah-Hartman

EDAC/armada-xp: Fix output of uncorrectable error counter

2021-10-20T09:57:50+00:00

commit d9b7748ffc45250b4d7bcf22404383229bc495f5 upstream.

The number of correctable errors is displayed as uncorrectable
errors because the "SBE" error count is passed to both calls of
edac_mc_handle_error().

Pass the correct uncorrectable error count to the second
edac_mc_handle_error() call when logging uncorrectable errors.

 [ bp: Massage commit message. ]

Fixes: 7f6998a41257 ("ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC")
Signed-off-by: Hans Potsch 
Signed-off-by: Borislav Petkov 
Cc: 
Link: https://lkml.kernel.org/r/20211006121332.58788-1-hans.potsch@nokia.com
Signed-off-by: Greg Kroah-Hartman

EDAC/dmc520: Assign the proper type to dimm->edac_mode

2021-09-30T08:13:07+00:00

commit 54607282fae6148641a08d81a6e0953b541249c7 upstream.

dimm->edac_mode contains values of type enum edac_type - not the
corresponding capability flags. Fix that.

Fixes: 1088750d7839 ("EDAC: Add EDAC driver for DMC520")
Signed-off-by: Borislav Petkov 
Cc: 
Link: https://lkml.kernel.org/r/20210916085258.7544-1-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman

EDAC/synopsys: Fix wrong value type assignment for edac_mode

2021-09-30T08:13:07+00:00

commit 5297cfa6bdf93e3889f78f9b482e2a595a376083 upstream.

dimm->edac_mode contains values of type enum edac_type - not the
corresponding capability flags. Fix that.

Issue caught by Coverity check "enumerated type mixed with another
type."

 [ bp: Rewrite commit message, add tags. ]

Fixes: ae9b56e3996d ("EDAC, synps: Add EDAC support for zynq ddr ecc controller")
Signed-off-by: Sai Krishna Potthuri 
Signed-off-by: Shubhrajyoti Datta 
Signed-off-by: Borislav Petkov 
Cc: 
Link: https://lkml.kernel.org/r/20210818072315.15149-1-shubhrajyoti.datta@xilinx.com
Signed-off-by: Greg Kroah-Hartman

EDAC/i10nm: Fix NVDIMM detection

2021-09-15T08:02:09+00:00

[ Upstream commit 2294a7299f5e51667b841f63c6d69474491753fb ]

MCDDRCFG is a per-channel register and uses bit{0,1} to indicate
the NVDIMM presence on DIMM slot{0,1}. Current i10nm_edac driver
wrongly uses MCDDRCFG as per-DIMM register and fails to detect
the NVDIMM.

Fix it by reading MCDDRCFG as per-channel register and using its
bit{0,1} to check whether the NVDIMM is populated on DIMM slot{0,1}.

Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors")
Reported-by: Fan Du 
Tested-by: Wen Jin 
Signed-off-by: Qiuxu Zhuo 
Signed-off-by: Tony Luck 
Link: https://lore.kernel.org/r/20210818175701.1611513-2-tony.luck@intel.com
Signed-off-by: Sasha Levin

EDAC/mce_amd: Do not load edac_mce_amd module on guests

2021-09-15T08:02:02+00:00

[ Upstream commit 767f4b620edadac579c9b8b6660761d4285fa6f9 ]

Hypervisors likely do not expose the SMCA feature to the guest and
loading this module leads to false warnings. This module should not be
loaded in guests to begin with, but people tend to do so, especially
when testing kernels in VMs. And then they complain about those false
warnings.

Do the practical thing and do not load this module when running as a
guest to avoid all that complaining.

 [ bp: Rewrite commit message. ]

Suggested-by: Borislav Petkov 
Signed-off-by: Smita Koralahalli 
Signed-off-by: Borislav Petkov 
Reviewed-by: Yazen Ghannam 
Tested-by: Kim Phillips 
Link: https://lkml.kernel.org/r/20210628172740.245689-1-Smita.KoralahalliChannabasappa@amd.com
Signed-off-by: Sasha Levin

EDAC/igen6: fix core dependency AGAIN

2021-07-15T18:59:59+00:00

My previous patch had a typo/thinko which prevents this driver
from being enabled: change X64_64 to X86_64.

Fixes: 0a9ece9ba154 ("EDAC/igen6: fix core dependency")
Signed-off-by: Randy Dunlap 
Cc: Qiuxu Zhuo 
Cc: Borislav Petkov 
Cc: Mauro Carvalho Chehab 
Cc: linux-edac@vger.kernel.org
Cc: bowsingbetee 
Cc: stable@vger.kernel.org
Signed-off-by: Tony Luck 
Signed-off-by: Linus Torvalds

Merge branch 'akpm' (patches from Andrew)

2021-07-02T19:08:10+00:00

Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton : (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...

kernel.h: split out panic and oops helpers

2021-07-01T18:06:04+00:00

kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out panic and
oops helpers.

There are several purposes of doing this:
- dropping dependency in bug.h
- dropping a loop by moving out panic_notifier.h
- unload kernel.h from something which has its own domain

At the same time convert users tree-wide to use new headers, although for
the time being include new header back to kernel.h to avoid twisted
indirected includes for existing users.

[akpm@linux-foundation.org: thread_info.h needs limits.h]
[andriy.shevchenko@linux.intel.com: ia64 fix]
  Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com

Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Reviewed-by: Bjorn Andersson 
Co-developed-by: Andrew Morton 
Acked-by: Mike Rapoport 
Acked-by: Corey Minyard 
Acked-by: Christian Brauner 
Acked-by: Arnd Bergmann 
Acked-by: Kees Cook 
Acked-by: Wei Liu 
Acked-by: Rasmus Villemoes 
Signed-off-by: Andrew Morton 
Acked-by: Sebastian Reichel 
Acked-by: Luis Chamberlain 
Acked-by: Stephen Boyd 
Acked-by: Thomas Bogendoerfer 
Acked-by: Helge Deller  # parisc
Signed-off-by: Linus Torvalds