[XEN][POWERPC] Turn off the Guard bit for access to the grant table

Soon, we will not have domains map this page like IO, but for the near
term lets undo all the IO-type PTE bits.
Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
--HG--
extra : transplant_source : E%89%B3%DE%C1%FD%87P%96%85%84q%AEI%3Cp%8EpI%A3

diff --git a/xen/arch/powerpc/papr/xlate.c b/xen/arch/powerpc/papr/xlate.c
index 1a08215df8cf9c9a24994d91d2a0cb0b578171c0..2d29d5819ce24d0b6712fdcfcd6db68c583e3d03 100644 (file)
--- a/xen/arch/powerpc/papr/xlate.c
+++ b/xen/arch/powerpc/papr/xlate.c
@@ -199,6 +199,7 @@ long pte_enter(ulong flags, ulong ptex, ulong vsid, ulong rpn)
         DBG("%s: Dom[%d] mapping grant table: 0x%lx\n",
             __func__, d->domain_id, pfn << PAGE_SHIFT);
         pte.bits.i = 0;
+        pte.bits.g = 0;
     }
     /* fixup the RPN field of our local PTE copy */
     pte.bits.rpn = mfn | lp_bits;