aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorAnton Blanchard <anton@samba.org>2005-05-01 11:58:46 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 11:58:46 -0400
commiteeb24de431ac8c80fd13a2c479cd0eb51b70484e (patch)
tree00d5548ba1f4a441cc4386ec8bff924bcc33d722 /arch
parentc4005e4f661a9ec8d91720a6b570865d060afcaf (diff)
[PATCH] ppc64: enforce medium thread priority in hypervisor calls
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@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/ppc64/kernel/pSeries_hvCall.S8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/ppc64/kernel/pSeries_hvCall.S b/arch/ppc64/kernel/pSeries_hvCall.S
index 0715d3038019..176e8da76466 100644
--- a/arch/ppc64/kernel/pSeries_hvCall.S
+++ b/arch/ppc64/kernel/pSeries_hvCall.S
@@ -28,6 +28,8 @@
28 unsigned long *out3); R10 28 unsigned long *out3); R10
29 */ 29 */
30_GLOBAL(plpar_hcall) 30_GLOBAL(plpar_hcall)
31 HMT_MEDIUM
32
31 mfcr r0 33 mfcr r0
32 34
33 std r8,STK_PARM(r8)(r1) /* Save out ptrs */ 35 std r8,STK_PARM(r8)(r1) /* Save out ptrs */
@@ -53,6 +55,8 @@ _GLOBAL(plpar_hcall)
53 55
54/* Simple interface with no output values (other than status) */ 56/* Simple interface with no output values (other than status) */
55_GLOBAL(plpar_hcall_norets) 57_GLOBAL(plpar_hcall_norets)
58 HMT_MEDIUM
59
56 mfcr r0 60 mfcr r0
57 stw r0,8(r1) 61 stw r0,8(r1)
58 62
@@ -75,6 +79,8 @@ _GLOBAL(plpar_hcall_norets)
75 unsigned long *out1); 120(R1) 79 unsigned long *out1); 120(R1)
76 */ 80 */
77_GLOBAL(plpar_hcall_8arg_2ret) 81_GLOBAL(plpar_hcall_8arg_2ret)
82 HMT_MEDIUM
83
78 mfcr r0 84 mfcr r0
79 ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ 85 ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
80 stw r0,8(r1) 86 stw r0,8(r1)
@@ -99,6 +105,8 @@ _GLOBAL(plpar_hcall_8arg_2ret)
99 unsigned long *out4); 112(R1) 105 unsigned long *out4); 112(R1)
100 */ 106 */
101_GLOBAL(plpar_hcall_4out) 107_GLOBAL(plpar_hcall_4out)
108 HMT_MEDIUM
109
102 mfcr r0 110 mfcr r0
103 stw r0,8(r1) 111 stw r0,8(r1)
104 112