Re: [tip:x86/asm] sched/x86_64: Don't save flags on context switch
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- Subject: Re: [tip:x86/asm] sched/x86_64: Don't save flags on context switch
- From: Oleg Nesterov <oleg@xxxxxxxxxx>
- Date: Tue, 4 Nov 2014 00:10:45 +0100
- Cc: Jan Beulich <jbeulich@xxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Sebastian Lackner <sebastian@xxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Chuck Ebbert <cebbert.lkml@xxxxxxxxx>, Anish Bhatt <anish@xxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "linux-tip-commits@xxxxxxxxxxxxxxx" <linux-tip-commits@xxxxxxxxxxxxxxx>
- In-reply-to: <CALCETrWoqu=7=-JYgZzcOcPsvYkA0eFTpbpmDUNA5=CLT3ykSw@mail.gmail.com>
- User-agent: Mutt/1.5.18 (2008-05-17)
On 11/03, Andy Lutomirski wrote:
>
> On Mon, Nov 3, 2014 at 2:57 PM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
> >
> > I actually tried to say that irqs should be always disabled (afaics!).
> > IOW "interrupts on" should not be possible, not "interrupts off".
>
> But this is checking whether interrupts were on in the frame we're
> returning to, not whether they're on right now, right?
OOPS ;) Thanks!
Oleg.
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