Re: [tip:x86/asm] x86/i386: Make sure stack-protector segment baseis cache aligned

From: Jeremy Fitzhardinge
Date: Fri Sep 04 2009 - 12:57:37 EST

On 09/04/09 09:52, H. Peter Anvin wrote:
> On 09/04/2009 09:01 AM, Jeremy Fitzhardinge wrote:
>>> It's correct that it doesn't make any difference for access, only for load.
>> Well, to be completely precise, restore. When returning to usermode,
>> the "pop %seg" is slightly faster if you're restoring a null selector,
>> which is typically the case for %fs as 32-bit usermode doesn't use it.
> That's a segment load...

Yeah, OK.


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