Revert "s390/smp: enforce lowcore protection on CPU restart"

This reverts commit 6f5c672d17f583b081e283927f5040f726c54598.

This breaks normal crash dump when CPU0 is offline.

Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 8f483132901ede0e77190366635bf70d602a11b6..c5d295c5e7287461935eb97f367a7b582025e9a3 100644 (file)
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -507,8 +507,8 @@ static void __init setup_lowcore_dat_on(void)
        S390_lowcore.svc_new_psw.mask |= PSW_MASK_DAT;
        S390_lowcore.program_new_psw.mask |= PSW_MASK_DAT;
        S390_lowcore.io_new_psw.mask |= PSW_MASK_DAT;
-       __ctl_set_bit(0, 28);
        __ctl_store(S390_lowcore.cregs_save_area, 0, 15);
+       __ctl_set_bit(0, 28);
        put_abs_lowcore(restart_flags, RESTART_FLAG_CTLREGS);
        put_abs_lowcore(program_new_psw, lc->program_new_psw);
        for (cr = 0; cr < ARRAY_SIZE(lc->cregs_save_area); cr++)