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

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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>
This commit is contained in:
Anton Blanchard 2005-05-01 08:58:46 -07:00 committed by Linus Torvalds
parent c4005e4f66
commit eeb24de431
1 changed files with 8 additions and 0 deletions
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8
arch/ppc64/kernel/pSeries_hvCall.S
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@ -28,6 +28,8 @@
unsigned long *out3); R10 unsigned long *out3); R10
*/ */
_GLOBAL(plpar_hcall) _GLOBAL(plpar_hcall)
HMT_MEDIUM
mfcr r0 mfcr r0
std r8,STK_PARM(r8)(r1) /* Save out ptrs */ std r8,STK_PARM(r8)(r1) /* Save out ptrs */
@ -53,6 +55,8 @@ _GLOBAL(plpar_hcall)
/* Simple interface with no output values (other than status) */ /* Simple interface with no output values (other than status) */
_GLOBAL(plpar_hcall_norets) _GLOBAL(plpar_hcall_norets)
HMT_MEDIUM
mfcr r0 mfcr r0
stw r0,8(r1) stw r0,8(r1)
@ -75,6 +79,8 @@ _GLOBAL(plpar_hcall_norets)
unsigned long *out1); 120(R1) unsigned long *out1); 120(R1)
*/ */
_GLOBAL(plpar_hcall_8arg_2ret) _GLOBAL(plpar_hcall_8arg_2ret)
HMT_MEDIUM
mfcr r0 mfcr r0
ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */ ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
stw r0,8(r1) stw r0,8(r1)
@ -99,6 +105,8 @@ _GLOBAL(plpar_hcall_8arg_2ret)
unsigned long *out4); 112(R1) unsigned long *out4); 112(R1)
*/ */
_GLOBAL(plpar_hcall_4out) _GLOBAL(plpar_hcall_4out)
HMT_MEDIUM
mfcr r0 mfcr r0
stw r0,8(r1) stw r0,8(r1)