Re: [patch 03/18] Dont leak NT bit into next task
From: Andi Kleen
Date: Thu Feb 22 2007 - 11:57:31 EST
On Thursday 22 February 2007 16:29, Adrian Bunk wrote:
> On Wed, Feb 21, 2007 at 11:00:15AM +0100, Giuseppe Bilotta wrote:
> > On Wednesday 21 February 2007 02:49, Greg KH wrote:
> > > /* frame pointer must be last for get_wchan */
> > > -#define SAVE_CONTEXT "pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> > > -#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp\n\t"
> > > +#define SAVE_CONTEXT "pushf ; pushq %%rbp ; movq %%rsi,%%rbp\n\t"
> > > +#define RESTORE_CONTEXT "movq %%rbp,%%rsi ; popq %%rbp ; popf\t"
> > No idea if this is a problem or not, but you forgot a \n after popf.
> A discussion of this issue is in the thread starting with 
> (and I'd re-add the \n in -stable kernels with the patch below
> (stolen from 2.6.16) no matter what happened in Linus' tree).
The newline only helps some broken out of tree patches (which I won't name here)
that shouldn't touch this anyways.
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