[llvm-dev] FYI, we've posted a component of Spectre mitigation on llvm-commits
Philip Reames via llvm-dev
llvm-dev at lists.llvm.org
Fri Jan 5 11:33:24 PST 2018
I would be very interested in discussing these approaches. This is
something we're currently putting a lot of thought into as well and have
come up with a number of potential variants. Comparing notes would be
worthwhile.
Philip
On 01/05/2018 03:22 AM, Chandler Carruth via llvm-dev wrote:
> Awesome, replied.
>
> We've been working on similar things, but didn't have them
> ready-to-publish due to slightly lower urgency (there are reasonable
> ways to locally mimic these kinds of things in sensitive areas like
> the Linux kernel, and even finding code patterns for variant #1 is
> substantially harder). We have some significantly different APIs we'd
> like to discuss here based on experience trying to implement these on
> x86 and deploy them to a reasonably large body of code. Hopefully more
> details soon as folks have time.
>
> On Fri, Jan 5, 2018 at 6:15 AM Kristof Beyls <Kristof.Beyls at arm.com
> <mailto:Kristof.Beyls at arm.com>> wrote:
>
> Thanks for the notification, Chandler.
>
> I also wanted to note that I’ve just posted another component for
> Spectre mitigation (variant 1), see
> https://reviews.llvm.org/D41760 and https://reviews.llvm.org/D41761.
> I believe this is completely complementary to the retpoline
> mitigation you pointed to at https://reviews.llvm.org/D41723#,
> which is targeted at mitigating variant 2.
>
> Thanks,
>
> Kristof
>
>> On 4 Jan 2018, at 11:23, Chandler Carruth via llvm-dev
>> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>>
>> Sending a note here as this seems likely to be of relatively
>> broad interest.
>>
>> Thread:
>> http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20180101/513630.html
>>
>> Review link:
>> https://reviews.llvm.org/D41723#
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>
>
>
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