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    SubjectRe: crash in entry.S restore_all, 2.6.12-rc2, x86, PAGEALLOC
    On Thu, Apr 07, 2005 at 07:47:41AM -0700, Linus Torvalds wrote:

    > So the sysenter sequence might as well look like
    > pushl $(__USER_DS)
    > pushl %ebp
    > sti
    > pushfl
    > ..
    > which actually does three protected pushes thanks to the one-instruction
    > "interrupt shadow" after an sti.

    Is this guaranteed on every x86 variant (or rather, every one
    that has SEP). ?


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