Re: crash in entry.S restore_all, 2.6.12-rc2, x86, PAGEALLOC

From: Dave Jones
Date: Thu Apr 07 2005 - 11:50:22 EST


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). ?

Dave

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