[PATCH -mm] kexec jump -v9
Eric W. Biederman
ebiederm at xmission.com
Thu May 15 21:35:28 EDT 2008
Vivek Goyal <vgoyal at 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.
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