Re: [Xen-devel] Page tables in Xen

To:	weiming <zephyr.zhao@xxxxxxxxx>
Subject:	Re: [Xen-devel] Page tables in Xen
From:	"Haifeng He" <hehaifeng2nd@xxxxxxxxx>
Date:	Wed, 28 Nov 2007 13:12:55 -0700
Cc:	xen-devel@xxxxxxxxxxxxxxxxxxx
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Thanks for answering my question. I am talking about PV mode. What about shadow
page table? Does it mean, Xen will keep (real) copies of page tables?

Thanks

Haifeng

On Nov 28, 2007 7:10 AM, weiming <zephyr.zhao@xxxxxxxxx> wrote:
> In my understanding, in PV, page table is allocated within guest OS,
> however, every update will go through xen via explicit hypercalls.
> in HVM, those update will be intercepted by xen.
>
> Please correct me if I'm wrong.
>
>
>
> On Nov 28, 2007 5:49 AM, Haifeng He <hehaifeng2nd@xxxxxxxxx> wrote:
> >
> >
> >
> > Hi,
> >
> > I have a question about memory page tables in Xen. As far as I
> > understood, every modification
> > to page table will go through Xen(hypervisor). Is it so that all page
> > tables are actually allocated
> > in Xen(hypervisor) instead of guest OS(domain)? Also, is it the case
> > that Xen(hypervisor) needs to
> > maintain a page table for each process running in every domain?
> >
> > Thanks
> >
> > Haifeng
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> >
>
>

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Re: [Xen-devel] Page tables in Xen