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    SubjectRe: [patch 04/17] Add pagetable accessors to pack and unpack pagetable entries
    Andi Kleen wrote:
    > Why is there a difference for null syscall? I had assumed we patched all the
    > fast path cases relevant there. Do you have an idea where it comes from?

    Sure. There's indirect calls for things like sti/cli/iret. It goes
    back to native speed when you patch the real instructions inline.

    J
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