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s390/nmi: Annotate s390_handle_damage() with __noreturn 

s390_handle_damage() ends by calling the non-returning function
disabled_wait() and therefore also never returns. Annotate it with the
__noreturn compiler attribute to improve compiler optimizations.

Remove the unreachable infinite while loop.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Thorsten Blum 2025-10-27 09:47:25 +01:00 committed by Heiko Carstens
parent 858063c1ae
commit f07ebfa5e4
1 changed files with 1 additions and 2 deletions
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3
arch/s390/kernel/nmi.c
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@ -184,7 +184,7 @@ static notrace void nmi_print_info(void)
sclp_emergency_printk(message);
}
static notrace void s390_handle_damage(void)
static notrace void __noreturn s390_handle_damage(void)
{
struct lowcore *lc = get_lowcore();
union ctlreg0 cr0, cr0_new;
@ -214,7 +214,6 @@ static notrace void s390_handle_damage(void)
lc->mcck_new_psw = psw_save;
local_ctl_load(0, &cr0.reg);
disabled_wait();
while (1);
}
NOKPROBE_SYMBOL(s390_handle_damage);