Messages in this thread |  | | Date | Thu, 24 Oct 2002 15:03:31 -0500 | From | Corey Minyard <> | Subject | Re: [PATCH] NMI request/release, version 5 - I think this one's ready |
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John Levon wrote:
>On Thu, Oct 24, 2002 at 10:36:22AM -0500, Corey Minyard wrote: > > > >>Is there any way to detect if the nmi watchdog actually caused the >>timeout? I don't understand the hardware well enough to do it without >> >> > >You can check if the counter used overflowed : > >#define CTR_OVERFLOWED(n) (!((n) & (1U<<31))) >#define CTRL_READ(l,h,msrs,c) do {rdmsr(MSR_P6_PERFCTR0, (l), (h));} while (0) > > CTR_READ(low, high, msrs, i); > if (CTR_OVERFLOWED(low)) { > ... found > Any way to do this for the IO_APIC case?
-Corey
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