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SubjectRe: [RFC 00/15] x86_64: Optimize percpu accesses
Jeremy Fitzhardinge <> writes:

>> Or we could do something completely evil. And use the other segment
>> register for the stack canary.
> That would still require gcc changes, so it doesn't help much.

We could use %fs for the per cpu variables. Then we could set %gs to whatever
we wanted to sync up with gcc


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