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From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Rik van Riel <riel@redhat.com>,
	Paul McKenney <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH 0/3] context_tracking: streamline code, avoid IRQ save/restore
Date: Wed, 28 Oct 2015 03:05:29 +0100	[thread overview]
Message-ID: <56302D69.8000101@redhat.com> (raw)
In-Reply-To: <1445996397-32703-1-git-send-email-pbonzini@redhat.com>



On 28/10/2015 02:39, Paolo Bonzini wrote:
> The first two of these patches were posted last February, the last one
> is new.  Rik's old measurements were that it shaved around .3 microseconds
> on each iteration of his KVM benchmark.
> 
> I guess three days before the start of the merge window is not
> the best time to post patches.  However, I brought this series up at
> kernel summit yesterday, and Andy's cleanups actually makes it trivial
> to apply this to syscall entry.  So here it is, perhaps it's worth it.
> 
> Assuming it works, of course, because this is compile-tested only. :)

Heh, Andy said it doesn't. :)

However, we could still merge the first two patches for 4.4 since they
have been tested.  I can even take them myself if I get Acked-by.  The
third one will have to wait for 4.5.

Thanks,

Paolo

      parent reply	other threads:[~2015-10-28  2:05 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-28  1:39 [PATCH 0/3] context_tracking: streamline code, avoid IRQ save/restore Paolo Bonzini
2015-10-28  1:39 ` [PATCH 1/3] context_tracking: remove duplicate enabled check Paolo Bonzini
2015-10-28  5:19   ` Andy Lutomirski
2015-11-07  9:38     ` Paolo Bonzini
2015-11-09 13:57   ` Rik van Riel
2015-10-28  1:39 ` [PATCH 2/3] context_tracking: avoid irq_save/irq_restore on guest entry and exit Paolo Bonzini
2015-10-28  5:20   ` Andy Lutomirski
2015-11-09 13:58   ` Rik van Riel
2015-10-28  1:39 ` [PATCH 3/3] x86: context_tracking: avoid irq_save/irq_restore on kernel " Paolo Bonzini
2015-10-28  5:22   ` Andy Lutomirski
2015-10-28 14:51     ` Paolo Bonzini
2016-03-14 19:23     ` Andy Lutomirski
2016-03-15  8:51       ` Paolo Bonzini
2015-10-28  2:05 ` Paolo Bonzini [this message]

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