This is a note to let you know that I've just added the patch titled
EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
edac-sb_edac-fix-top-of-high-memory-value-for-broadwell-haswell.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 537bddd069c743759addf422d0b8f028ff0f8dbc Mon Sep 17 00:00:00 2001
From: Eric Badger <ebadger@xxxxxxxxxxxxxxx>
Date: Sun, 10 Oct 2021 10:06:56 -0700
Subject: EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
From: Eric Badger <ebadger@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx
Reported-by: Meeta Saggi <msaggi@xxxxxxxxxxxxxxx>
Signed-off-by: Eric Badger <ebadger@xxxxxxxxxxxxxxx>
Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
Link: https://lore.kernel.org/r/20211010170127.848113-1-ebadger@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/edac/sb_edac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -848,7 +848,7 @@ static u64 haswell_get_tohm(struct sbrid
pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_1, ®);
rc = ((reg << 6) | rc) << 26;
- return rc | 0x1ffffff;
+ return rc | 0x3ffffff;
}
static u64 haswell_rir_limit(u32 reg)
Patches currently in stable-queue which might be from ebadger@xxxxxxxxxxxxxxx are
queue-4.4/edac-sb_edac-fix-top-of-high-memory-value-for-broadwell-haswell.patch
