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Message-ID: <p73643kkgei.fsf@bingen.suse.de>
Date: 12 Aug 2007 15:53:57 +0200
From: Andi Kleen <andi@...stfloor.org>
To: Alexey Dobriyan <adobriyan@...il.com>
Cc: Petr Vandrovec <petr@...drovec.name>, discuss@...-64.org,
linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: Re: [PATCH] Fix triplefault on x86-64 bootup
Alexey Dobriyan <adobriyan@...il.com> writes:
> On Sun, Aug 12, 2007 at 10:12:52AM +0200, Petr Vandrovec wrote:
> > --- a/arch/x86_64/lib/memcpy.S
> > +++ b/arch/x86_64/lib/memcpy.S
> > @@ -124,6 +124,8 @@ ENDPROC(__memcpy)
> > .quad memcpy
> > .quad 1b
> > .byte X86_FEATURE_REP_GOOD
> > - .byte .Lfinal - memcpy
> > + /* Replace only beginning, memcpy is used to apply alternatives, so it
> > + * is silly to overwrite itself with nops - reboot is only outcome... */
> > + .byte 2b - 1b
> > .byte 2b - 1b
> > .previous
>
> Thanks, this fixes E6400 reboots on bootup here.
Please test with only ab144f5ec64c42218a555ec1dbde6b60cf2982d6
applied (or rather a few patches back in the git history)
I bet that fixes it already.
-Andi
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