Commit 8f6c0c2b authored by John David Anglin's avatar John David Anglin Committed by Kyle McMartin
Browse files

parisc: Avoid interruption in critical region in entry.S 



Signed-off-by: default avatarJohn David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 53e30d02

arch/parisc/kernel/entry.S

+3 −2
Original line number Diff line number Diff line
@@ -2076,9 +2076,10 @@ syscall_restore: 
	LDREG	TASK_PT_GR31(%r1),%r31	   /* restore syscall rp */



	/* 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

	LDREG   TASK_PT_GR30(%r1),%r30             /* restore user sp */

	mfsp	%sr3,%r1			   /* Get users space id */

	copy    %r1,%r30                           /* Restore user sp */

	mfsp    %sr3,%r1                           /* Get user space id */

	mtsp    %r1,%sr7                           /* Restore sr7 */

	ssm     PSW_SM_I, %r0

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