Re: [Xen-devel] [PATCH] x86emul: CMPXCHG{8,16}B are memory writes

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 20/01/17 08:23, Jan Beulich wrote:
> This fixes a regression introduced by commit ff913f68c9 ("x86/PV:
> restrict permitted instructions during memory write emulation")
> breaking namely 32-bit PV guests (which commonly use CMPXCHG8B for
> certain page table updates).
>
> Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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