On Thu, Dec 13, 2012 at 01:11:55PM +0100, Paolo Bonzini wrote:
> MOV immediate instruction (opcodes 0xB8-0xBF) may take 64-bit operand.
> Some hypervisor implementations assumed the operand is 32-bit.  This
> should never happen because the instruction has no memory operand, but
> (like the existing test_mmx_movq_mf) the testcase tricks the emulator
> into executing one by mismatching the page tables and the corresponding
> TLB entry.
> 
> Cc: Nadav Amit <nadav.a...@gmail.com>
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
>  x86/emulator.c | 33 +++++++++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)

Wicked, missed that. If you're unlucky, though, TLB entry can
be gone by then (unlikely, though). 

Applied, thanks.

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