X-Git-Url: http://git.samba.org/samba.git/?p=sfrench%2Fcifs-2.6.git;a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Fentry.S;h=ba0b6a1f429fc315c17e4a8ace1cf8c5de8e0913;hp=6d70fec82d0e899f74f7428118fa2f9300f32f62;hb=486a153f0e294f7cc735838edcb6b32e623cbe52;hpb=f64a227b6b5cc1f8cc7f6ef9cc3351343636bac9

diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 6d70fec82d0e..ba0b6a1f429f 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -204,9 +204,6 @@ GLOBAL_ENTRY(ia64_switch_to)
 (p6)	br.cond.dpnt .map
 	;;
 .done:
-(p6)	ssm psr.ic			// if we had to map, reenable the psr.ic bit FIRST!!!
-	;;
-(p6)	srlz.d
 	ld8 sp=[r21]			// load kernel stack pointer of new task
 	mov IA64_KR(CURRENT)=in0	// update "current" application register
 	mov r8=r13			// return pointer to previously running task
@@ -234,6 +231,9 @@ GLOBAL_ENTRY(ia64_switch_to)
 	mov IA64_KR(CURRENT_STACK)=r26	// remember last page we mapped...
 	;;
 	itr.d dtr[r25]=r23		// wire in new mapping...
+	ssm psr.ic			// reenable the psr.ic bit
+	;;
+	srlz.d
 	br.cond.sptk .done
 END(ia64_switch_to)
 
@@ -470,6 +470,29 @@ ENTRY(load_switch_stack)
 	br.cond.sptk.many b7
 END(load_switch_stack)
 
+GLOBAL_ENTRY(prefetch_stack)
+	add r14 = -IA64_SWITCH_STACK_SIZE, sp
+	add r15 = IA64_TASK_THREAD_KSP_OFFSET, in0
+	;;
+	ld8 r16 = [r15]				// load next's stack pointer
+	lfetch.fault.excl [r14], 128
+	;;
+	lfetch.fault.excl [r14], 128
+	lfetch.fault [r16], 128
+	;;
+	lfetch.fault.excl [r14], 128
+	lfetch.fault [r16], 128
+	;;
+	lfetch.fault.excl [r14], 128
+	lfetch.fault [r16], 128
+	;;
+	lfetch.fault.excl [r14], 128
+	lfetch.fault [r16], 128
+	;;
+	lfetch.fault [r16], 128
+	br.ret.sptk.many rp
+END(prefetch_switch_stack)
+
 GLOBAL_ENTRY(execve)
 	mov r15=__NR_execve			// put syscall number in place
 	break __BREAK_SYSCALL