Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 766/779] Revert "s390/smp: enforce lowcore protection on CPU restart" | Date | Mon, 15 Aug 2022 20:06:50 +0200 |
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From: Alexander Gordeev <agordeev@linux.ibm.com>
commit 953503751a426413ea8aee2299ae3ee971b70d9b upstream.
This reverts commit 6f5c672d17f583b081e283927f5040f726c54598.
This breaks normal crash dump when CPU0 is offline.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/s390/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -507,8 +507,8 @@ static void __init setup_lowcore_dat_on( 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++)
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