[PATCH 0/4] x86: fold a number of VEX and EVEX templates

[Cui, Lili]

> -----Original Message-----
> From: Jan Beulich <jbeulich@suse.com>
> Sent: Monday, September 18, 2023 7:50 PM
> To: Cui, Lili <lili.cui@intel.com>
> Cc: Binutils <binutils@sourceware.org>; H.J. Lu <hjl.tools@gmail.com>;
> Hongtao Liu <crazylht@gmail.com>
> Subject: Re: [PATCH 0/4] x86: fold a number of VEX and EVEX templates
> 
> On 18.09.2023 13:18, Cui, Lili wrote:
> >> -----Original Message-----
> >> From: Jan Beulich <jbeulich@suse.com>
> >> Sent: Monday, September 18, 2023 5:38 PM
> >> To: Cui, Lili <lili.cui@intel.com>
> >> Cc: Binutils <binutils@sourceware.org>; H.J. Lu
> >> <hjl.tools@gmail.com>; Hongtao Liu <crazylht@gmail.com>
> >> Subject: Re: [PATCH 0/4] x86: fold a number of VEX and EVEX templates
> >>
> >> On 18.09.2023 07:47, Cui, Lili wrote:
> >>>> -----Original Message-----
> >>>> From: Hongtao Liu <crazylht@gmail.com>
> >>>> Sent: Monday, September 18, 2023 9:58 AM
> >>>>
> >>>> On Fri, Sep 15, 2023 at 4:46 PM Jan Beulich via Binutils
> >>>> <binutils@sourceware.org> wrote:
> >>>>>
> >>>>> The last two patches are explicitly RFC, for having a possibly
> >>>>> unwanted side effect.
> >>>> We're about to send out APX patches, @Lili Cui  cloud you take a
> >>>> look at the series?
> >>>
> >>> Since APX only needs to promote the VEX instructions without
> >> corresponding EVEX, these folding VEX and EVEX template patches has
> >> no effect on our internal APX patches.
> >>
> >> I don't follow: As soon as you have an insn with both a VEX and an
> >> EVEX encoding, there can be potential for folding (ideally right when
> >> APX is being introduced, rather than once again leaving it to me to clean up
> later).
> >
> > Oh, I got your point. After your patches checked in,  I will fold VEX and EVEX
> after we have promoted-EVEX.
> 
> Just fyi that I'll likely need a v2 of those patches. While thinking of how to
> remove the odd behavior of the latter two patches, I also spotted an anomaly
> (even if largely benign right now) in the first one. I'll have to think about that
> some more (just to be reasonably sure not to introduce yet new quirks), so I
> won't post right away.

Ok, your patches will enter the mainline before the APX patch, I will pay attention to this place. 

Thanks.
Lili.

> 
> Jan