Re: [Xen-devel] [PATCH] x86: correct EFLAGS.IF in SYSENTER frame

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.03.18 at 16:42, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 16/03/18 15:04, Jan Beulich wrote:
>>>>> On 16.03.18 at 15:29, <andrew.cooper3@xxxxxxxxxx> wrote:
>>> Somewhat independently of this patch, I think we should assert that
>>> flags are in the expected state in the return-to-guest path, so we
>>> notice accidental breakage like this more easily.
>> Not sure - nothing was broken here afaict, we just want to play
>> safe. And as said the exit paths already force EFLAGS.IF to 1.
> 
> It is only because of the pessimistic approach in a previous XSA fix
> that this isn't an XSA itself.

That plus the patch moving the STI didn't go anywhere other than
into staging so far.

Jan


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