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

[Mikael Pettersson]

Ingo Molnar writes:
 > 
 > * Ingo Molnar <mingo@xxxxxxx> wrote:
 > 
 > > > this fixed my crashes too.
 > > 
 > > spoke too soon - they still trigger even with the patch applied.
 > 
 > the patch below fixes the crash, it was related to CONFIG_PREEMPT.
 > 
 > 	Ingo
 > 
 > --
 > fix entry.S crash with PREEMPT+PAGEALLOC
 > 
 > Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
 > 
 > --- linux/arch/i386/kernel/entry.S.orig
 > +++ linux/arch/i386/kernel/entry.S
 > @@ -165,9 +165,9 @@ ENTRY(resume_kernel)
 >  need_resched:
 >  	movl TI_flags(%ebp), %ecx	# need_resched set ?
 >  	testb $_TIF_NEED_RESCHED, %cl
 > -	jz restore_all
 > +	jz restore_nocheck
 >  	testl $IF_MASK,EFLAGS(%esp)     # interrupts off (exception path) ?
 > -	jz restore_all
 > +	jz restore_nocheck
 >  	call preempt_schedule_irq
 >  	jmp need_resched
 >  #endif

Is this sufficient or do we also need the s/restore_all/restore_nocheck/
at around line 553 which was in the first posted patch?

/Mikael
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/