Re: [Xen-devel] [PATCH] xen/arm: Implement domain_get_maximum_gpfn

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-07-09 at 12:38 +0100, Julien Grall wrote:
> Hi Ian,
> 
> On 07/01/2014 05:57 PM, Stefano Stabellini wrote:
> > On Tue, 1 Jul 2014, Julien Grall wrote:
> >> The function domain_get_maximum_gpfn is returning the maximum gpfn ever
> >> mapped in the guest. We can use d->arch.p2m.max_mapped_gfn for this 
> >> purpose.
> >>
> >> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
> > 
> > Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> 
> Following the discussion on this thread, I will send a patch to fix
> xc_dom_gnttab_hvm_seed at least for ARM. Not sure what to do on x86, I
> may keep the same behavior.
> 
> I think this patch is still relevant and won't break things as we don't
> have platform with 48bits PA support.
> 
> Ian, do I have your ack on this patch?

Oops, when I first saw this I read the first para and stopped, sorry.

I'd much prefer to just have the fix to xc_dom_gnttab_hvm_seed for ARM
and continue to punt on this interface until it is actually needed by
something unavoidable on the guest side (and simultaneously hope that
day never comes...).

Ian.


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