From a6eaa82f9e4915157fa549f4d879da87c61c5a13 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Sat, 6 Aug 2022 09:29:46 +0200 Subject: [PATCH] Revert "s390/smp: enforce lowcore protection on CPU restart" commit 6087226b3bf98e536be141d2d98f9764239e5594 upstream. This reverts commit e3640cb262f0b13be4ad1610c51ef4d84f636c5f. This breaks normal crash dump when CPU0 is offline. Signed-off-by: Alexander Gordeev Signed-off-by: Greg Kroah-Hartman --- arch/s390/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index c8e7b3db82e28..6b1a8697fae8d 100644 --- 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++) -- 2.39.5