diff mbox series

[v5,08/25] x86/idle: Mark x86_idle static call as __ro_after_init

Message ID 20250429113242.998312-9-vschneid@redhat.com
State New
Headers show
Series context_tracking,x86: Defer some IPIs until a user->kernel transition | expand

Commit Message

Valentin Schneider April 29, 2025, 11:32 a.m. UTC 
Later commits will cause objtool to warn about static calls being used in
.noinstr sections in order to safely defer instruction patching IPIs
targeted at NOHZ_FULL CPUs.

x86_idle is updated in:
o xen_set_default_idle() <- __init xen_arch_setup()
o __init select_idle_routine()

IOW purely init context, and can thus be marked as __ro_after_init.

Reported-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
 arch/x86/kernel/process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 962c3ce39323e..90f31f8526aa4 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -752,7 +752,7 @@  void __cpuidle default_idle(void)
 EXPORT_SYMBOL(default_idle);
 #endif
 
-DEFINE_STATIC_CALL_NULL(x86_idle, default_idle);
+DEFINE_STATIC_CALL_NULL_RO(x86_idle, default_idle);
 
 static bool x86_idle_set(void)
 {