[PATCH] ppc64: enforce medium thread priority in hypervisor calls

[Anton Blanchard]

Hi,

Calls into the hypervisor do not raise the thread priority. Ensure we
are running at medium priority upon entry to the hypervisor.

Signed-off-by: Anton Blanchard <anton at samba.org>

Index: linux-2.6.12-rc2/arch/ppc64/kernel/pSeries_hvCall.S
===================================================================
--- linux-2.6.12-rc2.orig/arch/ppc64/kernel/pSeries_hvCall.S	2005-04-28 18:08:25.284495131 +1000
+++ linux-2.6.12-rc2/arch/ppc64/kernel/pSeries_hvCall.S	2005-04-28 18:13:06.195016349 +1000
@@ -28,6 +28,8 @@
 			unsigned long *out3);		R10
  */
 _GLOBAL(plpar_hcall)
+	HMT_MEDIUM
+
 	mfcr	r0
 
 	std	r8,STK_PARM(r8)(r1)	/* Save out ptrs */
@@ -53,6 +55,8 @@
 
 /* Simple interface with no output values (other than status) */
 _GLOBAL(plpar_hcall_norets)
+	HMT_MEDIUM
+
 	mfcr	r0
 	stw	r0,8(r1)
 
@@ -75,6 +79,8 @@
 			unsigned long *out1);		120(R1)
  */
 _GLOBAL(plpar_hcall_8arg_2ret)
+	HMT_MEDIUM
+
 	mfcr	r0
 	ld	r11,STK_PARM(r11)(r1)	/* put arg8 in R11 */
 	stw	r0,8(r1)
@@ -99,6 +105,8 @@
 		 	unsigned long *out4);		112(R1)
  */
 _GLOBAL(plpar_hcall_4out)
+	HMT_MEDIUM
+
 	mfcr	r0
 	stw	r0,8(r1)