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Subject[tip:x86/apic] x86, apic: Enable lapic nmi watchdog on AMD Family 11h
Commit-ID:  7d1849aff6687a135a8da3a75e32a00e3137a5e2
Gitweb: http://git.kernel.org/tip/7d1849aff6687a135a8da3a75e32a00e3137a5e2
Author: Mikael Pettersson <mikpe@it.uu.se>
AuthorDate: Thu, 3 Dec 2009 15:52:44 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 3 Dec 2009 16:25:15 +0100

x86, apic: Enable lapic nmi watchdog on AMD Family 11h

The x86 lapic nmi watchdog does not recognize AMD Family 11h,
resulting in:

NMI watchdog: CPU not supported

As far as I can see from available documentation (the BKDM),
family 11h looks identical to family 10h as far as the PMU
is concerned.

Extending the check to accept family 11h results in:

Testing NMI watchdog ... OK.

I've been running with this change on a Turion X2 Ultra ZM-82
laptop for a couple of weeks now without problems.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: <stable@kernel.org>
LKML-Reference: <19223.53436.931768.278021@pilspetsen.it.uu.se>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/cpu/perfctr-watchdog.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c
index fab786f..898df97 100644
--- a/arch/x86/kernel/cpu/perfctr-watchdog.c
+++ b/arch/x86/kernel/cpu/perfctr-watchdog.c
@@ -712,7 +712,7 @@ static void probe_nmi_watchdog(void)
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_AMD:
if (boot_cpu_data.x86 != 6 && boot_cpu_data.x86 != 15 &&
- boot_cpu_data.x86 != 16)
+ boot_cpu_data.x86 != 16 && boot_cpu_data.x86 != 17)
return;
wd_ops = &k7_wd_ops;
break;

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