lkml.org 
[lkml]   [2008]   [Nov]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Attempt rebooting via port CF9 if it seems to be available
Date
On Wednesday 12 November 2008, H. Peter Anvin wrote:
> Looking at doing the port CF9 fallback, I stumbled onto something fishy.
>
> I wonder if anyone here happens to have any idea why we turn off
> caching in machine_real_restart()? Jumping to the BIOS is *not* a
> reset; we jump to the decompressed BIOS on low memory which is usually
> shadowed, not to the BIOS entry point. In that way, it's more of an
> INIT than a reset, and disabling caching seems broken.
>
> Either way, here is a preliminary patch to do the CF9 if safe, and then
> falling back to keyboard reboot. I'm a bit concerned about how to test
> it, of course; this stuff is sensitive and just about impossible to test
> except on millions of machines at once...
>
> If you have any machines (especially problematic ones) and find that
> this patch either helps or hurts or do nothing, please do let me know so
> I have any idea of the extent of coverage.
>

Works here both with default and reboot=p.
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2008-11-12 19:53    [W:0.147 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site