[PATCH 4.4 025/162] EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell

[Greg Kroah-Hartman]

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, &reg);
 	rc = ((reg << 6) | rc) << 26;
 
-	return rc | 0x1ffffff;
+	return rc | 0x3ffffff;
 }
 
 static u64 haswell_rir_limit(u32 reg)