xen: mask out PWT too
The hypervisor doesn't allow PCD or PWT to be set on guest ptes, so
make sure they're masked out. Also, fix up some previous mispatching.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 52f3928..3e9e095 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -291,7 +291,7 @@
if (pte & _PAGE_PRESENT)
pte = phys_to_machine(XPADDR(pte)).maddr;
- pte &= ~_PAGE_PCD;
+ pte &= ~(_PAGE_PCD | _PAGE_PWT);
return (pte_t){ pte };
}