Re: [RFC] need to improve slot creation/destruction? -- Re: [RFC][PATCH] srcu: Implement call_srcu()

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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

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