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parisc: Avoid interruption in critical region in entry.S

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Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
John David Anglin 2010-04-11 17:12:56 +00:00 committed by Kyle McMartin
parent 53e30d0227
commit 8f6c0c2bf1
1 changed files with 3 additions and 2 deletions
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5
arch/parisc/kernel/entry.S
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@ -2076,9 +2076,10 @@ syscall_restore:
LDREG TASK_PT_GR31(%r1),%r31 /* restore syscall rp */ LDREG TASK_PT_GR31(%r1),%r31 /* restore syscall rp */
/* NOTE: We use rsm/ssm pair to make this operation atomic */ /* NOTE: We use rsm/ssm pair to make this operation atomic */
LDREG TASK_PT_GR30(%r1),%r1 /* Get user sp */
rsm PSW_SM_I, %r0 rsm PSW_SM_I, %r0
LDREG TASK_PT_GR30(%r1),%r30 /* restore user sp */ copy %r1,%r30 /* Restore user sp */
mfsp %sr3,%r1 /* Get users space id */ mfsp %sr3,%r1 /* Get user space id */
mtsp %r1,%sr7 /* Restore sr7 */ mtsp %r1,%sr7 /* Restore sr7 */
ssm PSW_SM_I, %r0 ssm PSW_SM_I, %r0