s390/mcck: fix calculation of SIE critical section size

The size of SIE critical section is calculated wrongly
as result of a missed subtraction in commit 0b0ed657fe00
("s390: remove critical section cleanup from entry.S")

Fixes: 0b0ed657fe00 ("s390: remove critical section cleanup from entry.S")
Cc: <stable@vger.kernel.org>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 12de7a9..3a81e38 100644 (file)
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -651,7 +651,7 @@ ENDPROC(stack_overflow)
 .Lcleanup_sie_mcck:
        larl    %r13,.Lsie_entry
        slgr    %r9,%r13
-       larl    %r13,.Lsie_skip
+       lghi    %r13,.Lsie_skip - .Lsie_entry
        clgr    %r9,%r13
        jh      .Lcleanup_sie_int
        oi      __LC_CPU_FLAGS+7, _CIF_MCCK_GUEST