[RFC PATCH v2 14/20] x86/kvm: Make kvm_async_pf_enabled __ro_after_init

Valentin Schneider
2023-07-20T16:36:03Z

objtool now warns about it:

vmlinux.o: warning: objtool: exc_page_fault+0x2a: Non __ro_after_init static key "kvm_async_pf_enabled" in .noinstr section

The key can only be enabled (and not disabled) in the __init function
kvm_guest_init(), so mark it as __ro_after_init.

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
arch/x86/kernel/kvm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 1cceac5984daa..319460090a836 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -44,7 +44,7 @@
#include <asm/svm.h>
#include <asm/e820/api.h>

-DEFINE_STATIC_KEY_FALSE(kvm_async_pf_enabled);
+DEFINE_STATIC_KEY_FALSE_RO(kvm_async_pf_enabled);

static int kvmapf = 1;

--
2.31.1