Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 20:22:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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: 50d1bb9367 ("sb_edac: add support for Haswell based systems")
Cc: stable@vger.kernel.org
Reported-by: Meeta Saggi <msaggi@purestorage.com>
Signed-off-by: Eric Badger <ebadger@purestorage.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20211010170127.848113-1-ebadger@purestorage.com
This commit is contained in:
Eric Badger 2021-10-10 10:06:56 -07:00 committed by Tony Luck
parent 0b6d4ab216
commit 537bddd069
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/edac/sb_edac.c
View File

@ -1052,7 +1052,7 @@ static u64 haswell_get_tohm(struct sbridge_pvt *pvt)
pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_1, &reg);
rc = ((reg << 6) | rc) << 26;
return rc | 0x1ffffff;
return rc | 0x3ffffff;
}
static u64 knl_get_tolm(struct sbridge_pvt *pvt)