Re: [Xen-devel] [PATCH 2/2] pvh: set only minimal cr0 and cr4 flags in order to use paging

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 11/25/2013 01:25 PM, Jan Beulich wrote:
> > > > On 19.11.13 at 13:34, Roger Pau Monne <roger.pau@xxxxxxxxxx> wrote:
> > Right now Xen sets the WP and NE flags on cr0 for PVH, which are not
> > needed in order to boot with paging enabled. The same happens with
> > cr4, at least on my system OSFXSR, OSXMMEXCPT and MCE are enabled by
> > default when there's no need.
> >
> > Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
> So I'm still having this patch sitting in my queue, and I don't think I've
> seen an ack from the VMX maintainers or the main PVH contributors.
> At least one of the two I'd like to have in place before applying.
This sounds like a good idea to me, but I don't feel like I have a firm 
enough grasp to give a reviewed-by; so:
Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>



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