[PATCH 2/3] Enable Intel CLDEMOTE instructions.

H.J. Lu hjl.tools@gmail.com
Tue Apr 17 12:11:00 GMT 2018


On Tue, Apr 17, 2018 at 5:07 AM, Tsimbalist, Igor V
<igor.v.tsimbalist@intel.com> wrote:
>> -----Original Message-----
>> From: H.J. Lu [mailto:hjl.tools@gmail.com]
>> Sent: Tuesday, April 17, 2018 1:42 PM
>> To: Tsimbalist, Igor V <igor.v.tsimbalist@intel.com>
>> Cc: Jan Beulich <JBeulich@suse.com>; binutils@sourceware.org
>> Subject: Re: [PATCH 2/3] Enable Intel CLDEMOTE instructions.
>>
>> On Tue, Apr 17, 2018 at 3:16 AM, Tsimbalist, Igor V
>> <igor.v.tsimbalist@intel.com> wrote:
>> >> -----Original Message-----
>> >> From: Jan Beulich [mailto:JBeulich@suse.com]
>> >> Sent: Tuesday, April 17, 2018 11:10 AM
>> >> To: Tsimbalist, Igor V <igor.v.tsimbalist@intel.com>
>> >> Cc: Lu, Hongjiu <hongjiu.lu@intel.com>; binutils@sourceware.org
>> >> Subject: RE: [PATCH 2/3] Enable Intel CLDEMOTE instructions.
>> >>
>> >> >>> On 16.04.18 at 23:49, <igor.v.tsimbalist@intel.com> wrote:
>> >> >>  -----Original Message-----
>> >> >> From: Jan Beulich [mailto:jbeulich@suse.com]
>> >> >> Sent: Sunday, April 15, 2018 3:30 PM
>> >> >> To: Tsimbalist, Igor V <igor.v.tsimbalist@intel.com>
>> >> >> Cc: Lu, Hongjiu <hongjiu.lu@intel.com>; binutils@sourceware.org
>> >> >> Subject: Re: [PATCH 2/3] Enable Intel CLDEMOTE instructions.
>> >> >>
>> >> >> >>> "Tsimbalist, Igor V" <igor.v.tsimbalist@intel.com> 04/13/18
>> 2:13
>> >> PM
>> >> >> >>>
>> >> >> >opcode/
>> >> >> >* i386-dis.c (dis386_twobyte): Add cldemote.
>> >> >>
>> >> >> This is wrong: CLDEMOTE isn't all of 0F 1C, but only 0F 1C /0, and
>> only
>> >> with
>> >> >> none of 66, F3, or F2 prefixes. With that corrected, quite a bit of what
>> you
>> >> >> drop
>> >> >> from the NOP testcases can and should also be left untouched.
>> >> >
>> >> > Yes, you are right. The updated patch is attached.
>> >>
>> >> Perhaps in the NOPs tests you alter, instead of commenting out the
>> >> two lines each, you'd better replace them with e.g. a 0F 1C /1 form?
>> >
>> > Oops. Just checked the fixes. Good suggestion. I will do this as a separate
>> fix now.
>> > I will post the update in this thread. Is it ok to check this in without
>> separate approval?
>> >
>>
>> Yes.
>
> Just in case I am going to commit this patch.
>

OK.

Thanks.


-- 
H.J.



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