Messages in this thread | | | Date | Sun, 29 Nov 2009 12:44:10 +0100 | From | Tim Blechmann <> | Subject | Re: [PATCH] x86, 64-bit: Set data segments to null after switching to 64-bit mode |
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On 11/25/2009 05:17 PM, Brian Gerst wrote: > This prevents kernel threads from inheriting non-null segment selectors, > and causing optimizations in __switch_to() to be ineffective. > > Signed-off-by: Brian Gerst <brgerst@gmail.com>
with this patch, the branch hint is actually correct, giving 100% correct predictions. so please revert my earlier patch (commit a3a1de0c34de6f5f8332cd6151c46af7813c0fcb)
thnx, tim
-- tim@klingt.org http://tim.klingt.org
Desperation is the raw material of drastic change. Only those who can leave behind everything they have ever believed in can hope to escape. William S. Burroughs
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