Messages in this thread | | | Date | Fri, 5 Nov 2004 09:41:36 -0700 (MST) | From | Zwane Mwaikambo <> | Subject | Re: IO_APIC NMI Watchdog not handled by suspend/resume. |
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Hi Nigel
On Fri, 5 Nov 2004, Nigel Cunningham wrote:
> Tracking down SMP problems, I've found that if you boot with > nmi_watchdog=1 (IO_APIC), the watchdog continues to run while suspend is > doing sensitive things like restoring the original kernel. I don't know > enough to provide a patch to disable it so thought I'd ask if someone > could volunteer to fix this?
Use enable/disable_lapic_nmi_watchdog but first check to see whether nmi_watchdog == NMI_IO_APIC in which case you'd then call disable/enable_timer_nmi_watchdog. Something like;
void swsuspend_disable_nmi_watchdog(void) { if ((nmi_watchdog == NMI_IO_APIC) && (smp_processor_id() == 0)) { disable_timer_nmi_watchdog(); return; }
disable_lapic_nmi_watchdog(); }
void swsuspend_enable_nmi_watchdog(void) { if ((nmi_watchdog == NMI_IO_APIC) && (smp_processor_id() == 0)) { enable_timer_nmi_watchdog(); return; }
enable_lapic_nmi_watchdog(); }
Do note that this has to be run on all processors, holla if there is anything else.
Thanks, Zwane
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