Messages in this thread |  | | | Date | Thu, 19 Mar 2009 15:18:27 +0800 | | Subject | Re: nonboot cpu on SMP suspend | | From | Li Yang <> |
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On Thu, Mar 19, 2009 at 3:04 PM, chen gong <gong.chen@linux.intel.com> wrote: > Rafael J. Wysocki 写道: >> >> On Wednesday 18 March 2009, Li Yang wrote: >>> >>> Hi all, >>> >>> I'm curious why we need to un-plug all the nonboot cpus before suspend >>> and start them all over again after the suspend(ACPI sleep)? I mean >>> if we can bring the booting cpu back to the exact state as before >>> suspend, why can't we just do the same for non-booting cpus? And that >>> will be much faster. Any thought? Thanks. >> >> Because we need to enter the BIOS with one CPU on-line only. >> > You mean only one CPU can be supported by BIOS when suspend/resume ?
If so, is it a defect of x86 BIOS? And is it true that for other architectures without a BIOS there won't be such a limitation if the boot code is sane? Thanks
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