x86, apic: Enable lapic nmi watchdog on AMD Family 11h
authorMikael Pettersson <mikpe@it.uu.se>
Thu, 3 Dec 2009 14:52:44 +0000 (15:52 +0100)
committerIngo Molnar <mingo@elte.hu>
Thu, 3 Dec 2009 15:25:15 +0000 (16:25 +0100)
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

index fab786f60ed60c05420e35897534c79ed777882a..898df9719afbedacb1a709c192b434e5595dd90a 100644 (file)
@@ -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;