[IA64] update the comment in ia64_switch_to.

update the comment in ia64_switch_to.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>

diff --git a/xen/arch/ia64/linux-xen/entry.S b/xen/arch/ia64/linux-xen/entry.S
index e25a5352ff29c72d1f72909835f92f0433f7b231..ec4b96883ecb4dc93c23aa0d76797bb5b6b0f2f2 100644 (file)
--- a/xen/arch/ia64/linux-xen/entry.S
+++ b/xen/arch/ia64/linux-xen/entry.S
@@ -265,7 +265,7 @@ GLOBAL_ENTRY(ia64_switch_to)
        srlz.d
        or r23=r25,r20                  // construct PA | page properties
 #ifdef XEN
-       ptr.d in0,r27                   // to purge dtr[IA64_TR_VHPT]
+       ptr.d in0,r27                   // to purge dtr[IA64_TR_VHPT] and dtr[IA64_TR_VPD]
 #else
        movl r27=IA64_GRANULE_SHIFT << 2        
 #endif