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The abrupt merging of...The abrupt merging of...Posted Dec 17, 2009 18:39 UTC (Thu) by michaeljt (subscriber, #39183)In reply to: The abrupt merging of... by mjg59 Parent article: The abrupt merging of Nouveau
> Suspending the CPU means that when power is reapplied it'll jump to its default start address.
> The kernel can't put code there, so performing suspend to RAM on commodity x86 without > firmware assistance is impossible. Is there really no known way to do this without assistance from the ACPI BIOS? I'm no expert, but my understanding was that DOS extenders did this all the time to switch from protected back to real mode at a time when there was no ACPI.
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The abrupt merging of... Posted Dec 17, 2009 18:49 UTC (Thu) by mjg59 (subscriber, #23239) [Link]
In S3, the processor has no stored state. "Resume" is equivalent to the machine being turned on
from scratch as far as it's concerned. It's up to the BIOS to check a flag to determine whether it's a cold power on or a resume.
Performing a full resume cycle is hard. You need to reprogram the memory controller, bring the
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