Re: [PATCH v2 07/22] KVM: MMU: cache mmio info on page fault path

Avi Kivity
2011-06-29T11:10:24Z

On 06/29/2011 02:09 PM, Xiao Guangrong wrote:
> On 06/29/2011 04:48 PM, Avi Kivity wrote:
> > On 06/22/2011 05:31 PM, Xiao Guangrong wrote:
> >> If the page fault is caused by mmio, we can cache the mmio info, later, we do
> >> not need to walk guest page table and quickly know it is a mmio fault while we
> >> emulate the mmio instruction
> >
> > Does this work if the mmio spans two pages?
> >
>
> If the mmio spans two pages, we already split the emulation into two parts,
> and the mmio cache info is only matched for one page, so i thinks it works
> well :-)

Ok, thanks.

--
error compiling committee.c: too many arguments to function