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SubjectRe: Intel P6 vs P7 system call performance


On Tue, 17 Dec 2002, Ulrich Drepper wrote:
>
> This is why I'd say mkae no distinction at all. Have the first
> nr_syscalls * 8 bytes starting at 0xfffff000 as a jump table.

No, the way sysenter works, the table approach just sucks up dcache space
(the kernel cannot know which sysenter is the one that the user uses
anyway, so the jump table would have to just add back some index and we'd
be back exactly where we started)

I'll keep it the way it is now.

Linus

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