# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1198236775 -32400
# Node ID 34c1ed3991857638a1913bb62a35dea1f280b64d
# Parent  e5841fc7e4bed8687d5d5dcbb23cec37429531f1
fix PV break fault handler.
PV domain break fault handler calls C routine reflect_event() with psr.ic = 0.
It might cause unrecoverable tlb miss. set psr.ic=1 before calling it.
PATCHNAME: fix_break_fault

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

diff -r e5841fc7e4be -r 34c1ed399185 xen/arch/ia64/xen/ivt.S
--- a/xen/arch/ia64/xen/ivt.S	Fri Dec 21 20:54:46 2007 +0900
+++ b/xen/arch/ia64/xen/ivt.S	Fri Dec 21 20:32:55 2007 +0900
@@ -714,15 +714,20 @@ 1:
 	adds r2=PT(CR_IFS)+16,r12
 	;;
 	st8 [r2]=r20
-	;;   
+	ssm psr.ic | PSR_DEFAULT_BITS
+	;;
+	srlz.i
+	;;
 	br.call.sptk.many b0=reflect_event
 	;;
+	rsm psr.i|psr.ic
 	adds r2=PT(R14)+16,r12
 	adds r3=PT(R8)+16,r12
 	;;
 	//r16 contains ar.bsp before cover
 	ld8 r16=[r2]
 	ld8 r8=[r3]
+	srlz.i
 	;;
 	br.sptk.many ia64_ret_from_syscall
 	;;