Re: [PATCH] fix broken vm86 interrupt/signal handling

[Andi Kleen]

Arjan van de Ven <arjan@xxxxxxxxxxxxx> writes:

D> On Fri, 2006-05-19 at 15:09 -0700, Aleksey Gorelov wrote:
> > Hi,
> > 
> >   This patch
> > www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h
> > =c3ff8ec31c1249d268cd11390649768a12bec1b9 has broken vm86
> > interrupt/signal handling in case when vm86 is called from kernel space.
> 
> can you point out where vm86 is called from kernel space?

Programs inside vm86 can run with segments that look like ring 0.
That is why i386 always checks (ring > 0 || vmmask in eflags) when it checks
for user mode.

I guess Aleksey meant that.

-Andi
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