From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: stable-review@kernel.org, torvalds@linux-foundation.org,
akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk,
Hans Rosenfeld <hans.rosenfeld@amd.com>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: [24/26] x86, cpu: Fix regression in AMD errata checking code
Date: Tue, 19 Apr 2011 14:02:40 -0700 [thread overview]
Message-ID: <20110419210324.794101717@clark.kroah.org> (raw)
In-Reply-To: <20110419210333.GA17417@kroah.com>
2.6.33-longterm review patch. If anyone has any objections, please let us know.
------------------
From: Hans Rosenfeld <hans.rosenfeld@amd.com>
commit 07a7795ca2e6e66d00b184efb46bd0e23d90d3fe upstream.
A bug in the family-model-stepping matching code caused the presence of
errata to go undetected when OSVW was not used. This causes hangs on
some K8 systems because the E400 workaround is not enabled.
Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
LKML-Reference: <1282141190-930137-1-git-send-email-hans.rosenfeld@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
arch/x86/kernel/cpu/amd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -687,7 +687,7 @@ bool cpu_has_amd_erratum(const int *erra
}
/* OSVW unavailable or ID unknown, match family-model-stepping range */
- ms = (cpu->x86_model << 8) | cpu->x86_mask;
+ ms = (cpu->x86_model << 4) | cpu->x86_mask;
while ((range = *erratum++))
if ((cpu->x86 == AMD_MODEL_RANGE_FAMILY(range)) &&
(ms >= AMD_MODEL_RANGE_START(range)) &&
next prev parent reply other threads:[~2011-04-19 21:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 21:03 [00/26] 2.6.33.12-longterm review Greg KH
2011-04-19 21:02 ` [01/26] cifs: always do is_path_accessible check in cifs_mount Greg KH
2011-04-19 21:02 ` [02/26] [media] video: sn9c102: world-wirtable sysfs files Greg KH
2011-04-19 21:02 ` [03/26] UBIFS: restrict world-writable debugfs files Greg KH
2011-04-19 21:02 ` [04/26] NET: cdc-phonet, handle empty phonet header Greg KH
2011-04-19 21:02 ` [05/26] x86: Fix a bogus unwind annotation in lib/semaphore_32.S Greg KH
2011-04-19 21:02 ` [06/26] [IA64] tioca: Fix assignment from incompatible pointer warnings Greg KH
2011-04-19 21:02 ` [07/26] [IA64] mca.c: Fix cast from integer to pointer warning Greg KH
2011-04-19 21:02 ` [08/26] ramfs: fix memleak on no-mmu arch Greg KH
2011-04-19 21:02 ` [09/26] MAINTAINERS: update STABLE BRANCH info Greg KH
2011-04-19 21:02 ` [10/26] UBIFS: fix oops when R/O file-system is fsynced Greg KH
2011-04-19 21:02 ` [11/26] x86, AMD: Set ARAT feature on AMD processors Greg KH
2011-04-19 21:02 ` [12/26] x86, cpu: AMD errata checking framework Greg KH
2011-04-19 21:02 ` [13/26] x86, cpu: Clean up AMD erratum 400 workaround Greg KH
2011-04-19 21:02 ` [14/26] x86, amd: Disable GartTlbWlkErr when BIOS forgets it Greg KH
2011-04-19 21:02 ` [15/26] USB: ftdi_sio: Added IDs for CTI USB Serial Devices Greg KH
2011-04-19 21:02 ` [16/26] USB: ftdi_sio: add PID for OCT DK201 docking station Greg KH
2011-04-19 21:02 ` [17/26] USB: ftdi_sio: add ids for Hameg HO720 and HO730 Greg KH
2011-04-19 21:02 ` [18/26] next_pidmap: fix overflow condition Greg KH
2011-04-19 21:02 ` [19/26] proc: do proper range check on readdir offset Greg KH
2011-04-19 21:02 ` [20/26] USB: EHCI: unlink unused QHs when the controller is stopped Greg KH
2011-04-19 21:02 ` [21/26] USB: fix formatting of SuperSpeed endpoints in /proc/bus/usb/devices Greg KH
2011-04-19 21:02 ` [22/26] USB: xhci - fix unsafe macro definitions Greg KH
2011-04-19 21:02 ` [23/26] USB: xhci - fix math in xhci_get_endpoint_interval() Greg KH
2011-04-19 21:02 ` Greg KH [this message]
2011-04-19 21:02 ` [25/26] net: ax25: fix information leak to userland harder Greg KH
2011-04-19 21:02 ` [26/26] net: fix rds_iovec page count overflow Greg KH
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