Re: [Xen-devel] [PATCH 2/2] x86/Xen/32: simplify xen_iret_crit_fixup's ring check

[Jürgen Groß <jgross@xxxxxxxx>]

On 11.11.19 15:32, Jan Beulich wrote:
> This can be had with two instead of six insns, by just checking the high
> CS.RPL bit.
>
> Also adjust the comment - there would be no #GP in the mentioned cases,
> as there's no segment limit violation or alike. Instead there'd be #PF,
> but that one reports the target EIP of said branch, not the address of
> the branch insn itself.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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