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[Qemu-devel] Re: [PATCH][STABLE] kvm: Fix cpuid initialization

From: Jan Kiszka
Subject: [Qemu-devel] Re: [PATCH][STABLE] kvm: Fix cpuid initialization
Date: Mon, 13 Apr 2009 18:20:59 +0200
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Christoph Hellwig wrote:
> On Mon, Apr 13, 2009 at 10:53:06AM +0200, Jan Kiszka wrote:
>> [ Looks like we need more kvm users via upstream qemu... ]
>> Fix (more or less) spurious guest boot failures due to corrupted cpuid
>> states. The reason was insufficient initialization of cpuid entries
>> before passing them to the kernel.
>> At this chance also fix improper entry pointer progression and simplify
>> the code a bit.
> Is that guest kernel stuck on the "testing hlt" message in the Linux
> kernel with that one?  I've seen that hang for a while now, but haven't
> been able to bisect it yet.

Maybe. For me it was "This kernel requires an XXX CPU, but only detected
an *i086* CPU." from arch/x86/boot/cpu.c. But if the hlt test depends on
certain cpuid values to do the right thing, your case may be fixed, too.
Does qemu from the kvm tree work for you?


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