From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>, kvm@vger.kernel.org
Subject: Re: [RFC] need to improve slot creation/destruction? -- Re: [RFC][PATCH] srcu: Implement call_srcu()
Date: Tue, 14 Feb 2012 11:52:58 +0200 [thread overview]
Message-ID: <4F3A2EFA.4090300@redhat.com> (raw)
In-Reply-To: <20120210171623.GA24403@amt.cnet>
On 02/10/2012 07:16 PM, Marcelo Tosatti wrote:
> On Thu, Feb 09, 2012 at 04:25:36PM +0200, Avi Kivity wrote:
> > On 02/08/2012 08:45 PM, Marcelo Tosatti wrote:
> > > > BTW do we really need fast slot creation/destruction?
> > >
> > > At the moment yes. Boot a RHEL/Fedora installation disk (or any other
> > > guest which uses SYSLINUX splash screen) and you will see.
> >
> > Another workload that suffers is Windows XP clearing the screen during boot.
> >
> > > That
> > > particular case is a limitation of cirrus in QEMU, ideally it should be
> > > optimized there.
> >
> > Why do you say that?
>
> There is no fundamental need to create/destroy the 0xa0000 VGA memory
> slot repeatedly.
If the guest writes to it, then the need exists.
> But you are right that the aim should be decent performance
> nevertheless.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-02-14 9:53 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-31 13:32 [RFC][PATCH] srcu: Implement call_srcu() Peter Zijlstra
2012-01-31 13:47 ` Avi Kivity
2012-01-31 13:50 ` Peter Zijlstra
2012-01-31 22:24 ` Paul E. McKenney
2012-02-01 10:22 ` Peter Zijlstra
2012-02-01 10:44 ` Avi Kivity
2012-02-01 10:49 ` Avi Kivity
2012-02-01 11:00 ` Takuya Yoshikawa
2012-02-01 11:01 ` Avi Kivity
2012-02-01 11:12 ` Takuya Yoshikawa
2012-02-01 13:24 ` Avi Kivity
2012-02-02 5:46 ` [test result] dirty logging without srcu update -- " Takuya Yoshikawa
2012-02-02 10:10 ` Avi Kivity
2012-02-02 10:21 ` Takuya Yoshikawa
2012-02-02 10:21 ` Avi Kivity
2012-02-02 10:40 ` Takuya Yoshikawa
2012-02-02 11:02 ` Avi Kivity
2012-02-02 14:44 ` Takuya Yoshikawa
2012-02-02 14:57 ` Avi Kivity
2012-02-01 13:43 ` Marcelo Tosatti
2012-02-01 15:42 ` Takuya Yoshikawa
2012-02-01 13:50 ` Marcelo Tosatti
2012-02-08 15:43 ` [RFC] need to improve slot creation/destruction? -- " Takuya Yoshikawa
2012-02-08 18:45 ` Marcelo Tosatti
2012-02-09 13:48 ` Takuya Yoshikawa
2012-02-09 14:25 ` Avi Kivity
2012-02-10 17:16 ` Marcelo Tosatti
2012-02-14 9:52 ` Avi Kivity [this message]
2012-02-09 14:23 ` Avi Kivity
2012-02-09 14:24 ` Avi Kivity
2012-02-10 13:08 ` Takuya Yoshikawa
2012-02-10 17:17 ` Marcelo Tosatti
2012-02-10 13:25 ` Takuya Yoshikawa
2012-02-14 9:52 ` Avi Kivity
2012-02-01 14:07 ` Paul E. McKenney
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