Messages in this thread | | | Date | Sat, 28 Nov 1998 03:10:02 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: [patch] entry.S asm improvement (removed some ugly jmp) |
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On Sat, 28 Nov 1998, Kurt Garloff wrote:
>Always pair CALL and RETURN >--------------------------- >If CALLs and RETs are not paired, the return address stack gets out of >synchronization, increasing the latency of returns and decreasing >performance. > > >Hope this helps.
OK, thanks.
But switch_to()/__switch_to() (include/asm-i386/system.h) uses an impair number of call/ret. Why? Am I missing something (maybe because it' s too late ;).
Andrea Arcangeli
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