s390/smp: make absolute lowcore / cpu restart parameter accesses more robust

[deliverable/linux.git] / arch / s390 / kernel / entry64.S

diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index d5f02e480e5102f5dd675faa594eb4cbc6acb38d..2813e831ba3284b884ead5801d57dfbdcc6c8472 100644 (file)
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -751,7 +751,9 @@ ENTRY(restart_int_handler)
        mvc     __PT_PSW(16,%r15),__LC_RST_OLD_PSW # store restart old psw
        aghi    %r15,-STACK_FRAME_OVERHEAD      # create stack frame on stack
        xc      0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
-       lmg     %r1,%r3,__LC_RESTART_FN         # load fn, parm & source cpu
+       lg      %r1,__LC_RESTART_FN             # load fn, parm & source cpu
+       lg      %r2,__LC_RESTART_DATA
+       lg      %r3,__LC_RESTART_SOURCE
        ltgr    %r3,%r3                         # test source cpu address
        jm      1f                              # negative -> skip source stop
 0:     sigp    %r4,%r3,SIGP_SENSE              # sigp sense to source cpu