Re: [Xen-devel] [PATCH] x86/xen: Initialize cr4 shadow for 64-bit PV(H) guests

[Boris Ostrovsky]

On 03/03/2015 12:35 AM, Luis R. Rodriguez wrote:
> On Mon, Feb 23, 2015 at 9:09 AM, David Vrabel <david.vrabel@xxxxxxxxxx> wrote:
> > On 23/02/15 16:01, Boris Ostrovsky wrote:
> > > Commit 1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
> > > introduced CR4 shadows.
> > >
> > > These shadows are initialized in early boot code. The commit missed
> > > initialization for 64-bit PV(H) guests that this patch adds.
> > Applied to stable/for-linus-4.0, thanks.
> >
> > Boris, can you kick of a set of tests on this branch, please?
> Do we know worst case what should blow up without this commit ?

PVH guest will crash.

-boris

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