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SubjectRe: [PATCH 2/2] xen: don't drop NX bit

* Jeremy Fitzhardinge <jeremy@goop.org> wrote:

> When converting the pfn/mfn in a pagetable entry, make sure we mask
> out the protection flags properly. Formerly, this code was losing the
> NX bit, and not dealing with extra Xen-defined software flags in ptes.
>
> Because NX is now enforced properly, we must put the hypercall page
> into the .text segment so that it is executable.

applied all three fix patches to tip/x86/xen, thanks Jeremy.

i have also cherry-picked them into x86/urgent, to push v2.6.26-wards if
they passes testing. The commits are [in that order]:

# x86/urgent: 4653938: xen: Use wmb instead of rmb in xen_evtchn_do_upcall().
# x86/urgent: 05345b0: xen: mask unwanted pte bits in __supported_pte_mask
# x86/urgent: ebb9cfe: xen: don't drop NX bit

Ingo


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