# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1192425119 -32400
# Node ID fb737f30b52de7f38486ba6b2035ae0a031b2f29
# Parent  97d31d95a843f46a87c64d546fb2512d1bf970d0
clean up of hypercall leave path.
p9 is set, but not used.
PATCHNAME: elimilate_set_p9

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 97d31d95a843 -r fb737f30b52d xen/arch/ia64/linux-xen/entry.S
--- a/xen/arch/ia64/linux-xen/entry.S	Thu Oct 11 18:21:42 2007 +0900
+++ b/xen/arch/ia64/linux-xen/entry.S	Mon Oct 15 14:11:59 2007 +0900
@@ -787,7 +787,9 @@ ENTRY(ia64_leave_syscall)
 	;;
 	invala			// M0|1 invalidate ALAT
 	rsm psr.i | psr.ic	// M2   turn off interrupts and interruption collection
+#ifndef XEN
 	cmp.eq p9,p0=r0,r0	// A    set p9 to indicate that we should restore cr.ifs
+#endif
 
 	ld8 r29=[r2],16		// M0|1 load cr.ipsr
 	ld8 r28=[r3],16		// M0|1 load cr.iip
@@ -1041,7 +1043,9 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	;;
 	ld8 r26=[r16],16	// load ar.pfs
 	ld8 r27=[r17],16	// load ar.rsc
+#ifndef XEN	
 	cmp.eq p9,p0=r0,r0	// set p9 to indicate that we should restore cr.ifs
+#endif
 	;;
 	ld8 r24=[r16],16	// load ar.rnat (may be garbage)
 	ld8 r23=[r17],16	// load ar.bspstore (may be garbage)
@@ -1088,7 +1092,9 @@ GLOBAL_ENTRY(ia64_leave_kernel)
 	mov r19=ar.bsp			// get new backing store pointer
 rbs_switch:
 	sub r16=r16,r18			// krbs = old bsp - size of dirty partition
+#ifndef XEN
 	cmp.ne p9,p0=r0,r0		// clear p9 to skip restore of cr.ifs
+#endif
 	;;
 	sub r19=r19,r16			// calculate total byte size of dirty partition
 	add r18=64,r18			// don't force in0-in7 into memory...
diff -r 97d31d95a843 -r fb737f30b52d xen/arch/ia64/vmx/vmx_entry.S
--- a/xen/arch/ia64/vmx/vmx_entry.S	Thu Oct 11 18:21:42 2007 +0900
+++ b/xen/arch/ia64/vmx/vmx_entry.S	Mon Oct 15 14:11:59 2007 +0900
@@ -112,7 +112,9 @@ GLOBAL_ENTRY(ia64_leave_nested)
 	;;
 	ld8 r26=[r16],16	// load ar.pfs
 	ld8 r27=[r17],16	// load ar.rsc
+#ifndef XEN
 	cmp.eq p9,p0=r0,r0	// set p9 to indicate that we should restore cr.ifs
+#endif
 	;;
 	ld8 r24=[r16],16	// load ar.rnat (may be garbage)
 	ld8 r23=[r17],16// load ar.bspstore (may be garbage)
@@ -531,7 +533,9 @@ GLOBAL_ENTRY(ia64_leave_hypercall)
     ;;
     invala			// M0|1 invalidate ALAT
     rsm psr.i | psr.ic	// M2   turn off interrupts and interruption collection
+#ifndef XEN
     cmp.eq p9,p0=r0,r0	// A    set p9 to indicate that we should restore cr.ifs
+#endif
 
     ld8 r31=[r2],32		// M0|1 load cr.ipsr
     ld8 r30=[r3],16		// M0|1 load cr.iip