linux-kernel - Re: [LKP] [x86/context_tracking] db23da8b95: inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.

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Message-ID: <20151102122547.GA11302@wfg-t540p.sh.intel.com>
Date:	Mon, 2 Nov 2015 20:25:47 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	LKP <lkp@...org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [LKP] [x86/context_tracking] db23da8b95: inconsistent
 {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.

Hi Paolo,

Never mind, it just takes 2 minutes for me. :)

Thanks,
Fengguang

On Mon, Nov 02, 2015 at 01:19:20PM +0100, Paolo Bonzini wrote:
> Hi Fengguang,
> 
> this patch is not ready, and is left for 4.5; see Andy's comment at
> http://permalink.gmane.org/gmane.linux.kernel/2072877.  Only the other
> two are.
> 
> I'm sorry for the inconvenience.
> 
> Thanks,
> 
> Paolo
> 
> On 02/11/2015 13:11, Fengguang Wu wrote:
> > Hi Paolo,
> > 
> > FYI, here is another bisect result.
> > 
> > https://github.com/0day-ci/linux Paolo-Bonzini/context_tracking-remove-duplicate-enabled-check/20151028-094317
> > 
> > commit db23da8b95ece9b57d4cfd63f5ee10502f1af0c8
> > Author:     Paolo Bonzini <pbonzini@...hat.com>
> > AuthorDate: Wed Oct 28 02:39:57 2015 +0100
> > Commit:     0day robot <fengguang.wu@...el.com>
> > CommitDate: Wed Oct 28 09:43:20 2015 +0800
> > 
> >     x86: context_tracking: avoid irq_save/irq_restore on kernel entry and exit
> >     
> >     x86 always calls user_enter and user_exit with interrupt disabled.
> >     Therefore, it is not necessary to check for exceptions, nor to
> >     save/restore the IRQ state, when context tracking functions are
> >     called by guest_enter and guest_exit.
> >     
> >     Use the previously introduced __context_tracking_entry and
> >     __context_tracking_exit.
> >     
> >     Cc: Andy Lutomirski <luto@...nel.org>
> >     Cc: Frederic Weisbecker <fweisbec@...il.com>
> >     Cc: Rik van Riel <riel@...hat.com>
> >     Cc: Paul McKenney <paulmck@...ux.vnet.ibm.com>
> >     Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> _______________________________________________
> LKP mailing list
> LKP@...ts.01.org
> https://lists.01.org/mailman/listinfo/lkp
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