From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [RFC] need to improve slot creation/destruction? -- Re:
 [RFC][PATCH] srcu: Implement call_srcu()
Date: Fri, 10 Feb 2012 15:16:23 -0200
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Cc: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>, kvm@vger.kernel.org
To: Avi Kivity <avi@redhat.com>
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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.

But you are right that the aim should be decent performance
nevertheless.