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x86/xen: mark xen_pv_play_dead() as __noreturn

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Mark xen_pv_play_dead() and related to that xen_cpu_bringup_again()
as "__noreturn".

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221125063248.30256-3-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Juergen Gross 2022-11-25 07:32:48 +01:00
parent 336f560a89
commit f697cb00af
3 changed files with 4 additions and 3 deletions
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2
arch/x86/xen/smp.h
View File

@ -21,7 +21,7 @@ void xen_smp_send_reschedule(int cpu);
void xen_smp_send_call_function_ipi(const struct cpumask *mask); void xen_smp_send_call_function_ipi(const struct cpumask *mask);
void xen_smp_send_call_function_single_ipi(int cpu); void xen_smp_send_call_function_single_ipi(int cpu);
void xen_cpu_bringup_again(unsigned long stack); void __noreturn xen_cpu_bringup_again(unsigned long stack);
struct xen_common_irq { struct xen_common_irq {
int irq; int irq;

4
arch/x86/xen/smp_pv.c
View File

@ -381,7 +381,7 @@ static void xen_pv_cpu_die(unsigned int cpu)
} }
} }
static void xen_pv_play_dead(void) /* used only with HOTPLUG_CPU */ static void __noreturn xen_pv_play_dead(void) /* used only with HOTPLUG_CPU */
{ {
play_dead_common(); play_dead_common();
HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL); HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL);
@ -400,7 +400,7 @@ static void xen_pv_cpu_die(unsigned int cpu)
BUG(); BUG();
} }
static void xen_pv_play_dead(void) static void __noreturn xen_pv_play_dead(void)
{ {
BUG(); BUG();
} }

1
tools/objtool/check.c
View File

@ -186,6 +186,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
"snp_abort", "snp_abort",
"stop_this_cpu", "stop_this_cpu",
"usercopy_abort", "usercopy_abort",
"xen_cpu_bringup_again",
"xen_start_kernel", "xen_start_kernel",
}; };