Re: [Xen-devel] [PATCH v2 1/2] x86/vmx: Don't use hvm_inject_hw_exception() in long_mode_do_msr_write()

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 13.12.17 at 11:50, <andrew.cooper3@xxxxxxxxxx> wrote:
> Since c/s 49de10f3c1718 "x86/hvm: Don't raise #GP behind the emulators back
> for MSR accesses", returning X86EMUL_EXCEPTION has pushed the exception
> generation to the top of the call tree.
> 
> Using hvm_inject_hw_exception() and returning X86EMUL_EXCEPTION causes a
> double #GP injection, which combines to #DF.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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