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s390: implement arch_do_panic

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Implement s390 specific arch_do_panic() instead of using s390 specific
ifdef sections in vpanic() code.  disabled_wait() is now called after "end
Kernel panic" marker.  No functional changes.

Link: https://lore.kernel.org/20260831-arch_do_panic-v6-2-a1e170a9e7fd@linux.ibm.com
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Bradley Morgan <include@grrlz.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Mete Durlu 2026-08-31 11:57:16 +02:00 committed by Andrew Morton
parent 97c358198e
commit ed26d6fcf5
2 changed files with 7 additions and 3 deletions
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7
arch/s390/kernel/traps.c
View File

@ -26,6 +26,7 @@
#include <linux/entry-common.h>
#include <linux/kmsan.h>
#include <linux/bug.h>
#include <linux/panic.h>
#include <asm/entry-percpu.h>
#include <asm/asm-extable.h>
#include <asm/irqflags.h>
@ -33,6 +34,7 @@
#include <asm/vtime.h>
#include <asm/fpu.h>
#include <asm/fault.h>
#include <asm/processor.h>
#include "entry.h"
struct pgm_stat {
@ -283,6 +285,11 @@ static void monitor_event_exception(struct pt_regs *regs)
}
}
void arch_do_panic(void)
{
disabled_wait();
}
void kernel_stack_invalid(struct pt_regs *regs)
{
/*

3
kernel/panic.c
View File

@ -752,9 +752,6 @@ void vpanic(const char *fmt, va_list args)
pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n"
"twice on console to return to the boot prom\n");
}
#endif
#if defined(CONFIG_S390)
disabled_wait();
#endif
pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf);