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

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Thursday, December 7, 2017 4:06 AM
> 
> Since c/s 49de10f3c1718 "x86/hvm: Don't raise #GP behind the emulators
> back
> for MSR accesses", returnning 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.
> 
> While fixing this up, rename uncanonical_address to the more common
> gp_fault,
> and drop the HVM_DBG_LOG() line which is redundant given the two
> adjacent
> lines.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> ---

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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