Re: [PATCH v3 2/5] x86/enter: Create macros to set/clear IBRS

From: Tim Chen
Date: Thu Jan 11 2018 - 16:24:58 EST


On 01/11/2018 01:05 PM, Tim Chen wrote:
> On 01/11/2018 08:04 AM, Thomas Gleixner wrote:
>> On Tue, 9 Jan 2018, Tim Chen wrote:
>>> +
>>> +.macro WRMSR_ASM msr_nr:req edx_val:req eax_val:req
>>> + movl \msr_nr, %ecx
>>> + movl \edx_val, %edx
>>> + movl \eax_val, %eax
>>> +.endm
>>
>> This is the most brilliant piece of useless code I've seen in a long time.
>>
>>
>> tglx
>>
>
> Sorry that was a major brain fart on my part.
>

Our internal tester mixed in retpoline with IBRS so we've missed
this. Will correct our test.

Tim