[PATCH 15/15] Revert "x86: default to reboot via ACPI"

Matthew Garrett mjg at redhat.com
Thu Nov 6 18:24:19 EST 2008

On Thu, Nov 06, 2008 at 05:17:25PM -0500, Len Brown wrote:
> > Does Windows default to using the ACPI method now?
> That is my guess, based on the fact that we've seen
> newer machines that don't reboot w/o using the ACPI reset reg.

We've seen machines that won't reboot for a variety of reasons in the 
past. In some cases this has seemed to be due to hardware being in a 
state that the BIOS didn't expect. Hitting the SMI trap behind the ACPI 
register might work around this, but I suspect that in many cases we 
could achieve the same effect by spending more time trying to work out 
whether there's any common themes in the failures.

Matthew Garrett | mjg59 at srcf.ucam.org

More information about the kexec mailing list