Re: [RFC] Expose host cpuid to guest

[Mike Lampard <mike-/+b+wjvSUqIxsqv6Oivclw@public.gmane.org>]

On Fri, 23 Nov 2007 12:00:00 am Avi Kivity wrote:
> Mike Lampard wrote:
> > With current kvm-git (commit 51727a110220681f6f43b005d069e28c58f5d151)
> > (userspace is current to commit 6a385c9539f9746d7ff51ef34c064c3eba86448b)
> > and the userspace portion of this patch I cannot boot a 64 bit guest
> > (Mandriva 2008 x64) on my AMD x2 without -cpu host.  The guest kernel
> > says "Your CPU does not support long mode.  Use a 32bit distribution.". 
> > Works fine without the userspace portion of the patch.

erm.. sorry, seems the patch mis-applied @ my end, I just re-applied the 
userspace patch and the above problem is no longer, 1 down, 1 to go:

> >
> > With -cpu host, the 64bit kernel starts to boot then panics almost
> > immediately:
> > Code: 0f 30 e9 ed fc ff ff b8 66 00 00 00 f0 0f ab 45 08 e9 e2 fa
> > RIP [<ffffffff8020ff99> identify_cpu+0x609/0x700
> >  RSP <ffffffff8057df58>
> > Kernel panic - not syncing: Attempted to kill the idle task!
> >
> > In the host log I see: cpu0 unhandled wrmsr: 0xc0010015, which might not
> > have anything to do with this patch of course :)
>
> A listing/disassembly of the function will help show where the problem is.

yes, of course.. I'll post it as soon as I can.

Thanks for the help
Mike

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