Messages in this thread | | | From | (Eric W. Biederman) | Date | Thu, 15 May 2008 18:35:28 -0700 | Subject | Re: [PATCH -mm] kexec jump -v9 |
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Vivek Goyal <vgoyal@redhat.com> writes:
> ioapic_suspend() is not putting APICs in Legacy mode and that's why > we are seeing the issue. It only saves the IOAPIC routing table entries > and these entries are restored during ioapic_resume(). > > But I think somebody has to put APICs in legacy mode for normal > hibernation also. Not sure who does it. May be BIOS, so that during > resume, second kernel can get the timer interrupts.
I doubt anything cares in the suspend to ram case. There should just be a small BIOS trampoline to get back to linux when the processor restarts. And you don't need interrupts for any of that.
Eric
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