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x86, nmi: Support NMI watchdog on newer AMD CPU families

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CPU families 0x12, 0x14 and 0x15 support this functionality.

Signed-off-by: Andreas Herrmann <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
This commit is contained in:
Andreas Herrmann 2010-09-30 14:33:58 +02:00 • committed by H. Peter Anvin
commit 420b13b60a
1 changed files with 4 additions and 5 deletions
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9
arch/x86/kernel/cpu/perfctr-watchdog.c
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@ -700,11 +700,10 @@ 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 != 17)
return;
wd_ops = &k7_wd_ops;
break;
if (boot_cpu_data.x86 == 6 ||
(boot_cpu_data.x86 >= 0xf && boot_cpu_data.x86 <= 0x15))
wd_ops = &k7_wd_ops;
return;
case X86_VENDOR_INTEL:
/* Work around where perfctr1 doesn't have a working enable
* bit as described in the following errata: