Thread (11 messages) 11 messages, 2 authors, 2020-02-19
STALE2312d
Revisions (2)
  1. v2 current
  2. v3 [diff vs current]

[PATCH v2 7/9] KVM: x86: Drop __exit from kvm_x86_ops' hardware_unsetup()

From: Sean Christopherson <hidden>
Date: 2020-02-18 23:55:03
Also in: kvm, kvmarm, linux-mips, lkml
Subsystem: kernel virtual machine for x86 (kvm/x86), the rest, x86 architecture (32-bit and 64-bit) · Maintainers: Sean Christopherson, Paolo Bonzini, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen

Remove the __exit annotation from VMX/SVM's hardware_unsetup(), the hook
can be reached during kvm_init() by way of kvm_arch_hardware_unsetup()
if failure occurs at various points during initialization.

Note, there is no known functional issue with the __exit annotation, the
above is merely justification for its removal.  The real motivation is
to be able to annotate vmx_x86_ops and svm_x86_ops with __initdata,
which makes objtool complain because objtool doesn't understand that the
vendor specific __initdata is being copied by value to a non-__initdata
instance.

Signed-off-by: Sean Christopherson <redacted>
---
 arch/x86/include/asm/kvm_host.h | 2 +-
 arch/x86/kvm/svm.c              | 2 +-
 arch/x86/kvm/vmx/vmx.c          | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index b0c2431f8374..5f379a2d5e15 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1044,7 +1044,7 @@ static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode_logical)
 struct kvm_x86_ops {
 	int (*hardware_enable)(void);
 	void (*hardware_disable)(void);
-	void (*hardware_unsetup)(void);            /* __exit */
+	void (*hardware_unsetup)(void);
 	bool (*cpu_has_accelerated_tpr)(void);
 	bool (*has_emulated_msr)(int index);
 	void (*cpuid_update)(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 83b12928d709..59af4f5386de 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1468,7 +1468,7 @@ static __init int svm_hardware_setup(void)
 	return r;
 }
 
-static __exit void svm_hardware_unsetup(void)
+static void svm_hardware_unsetup(void)
 {
 	int cpu;
 
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8c7dea508dcb..813dfbbfe98b 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7548,7 +7548,7 @@ static bool vmx_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
 	return to_vmx(vcpu)->nested.vmxon;
 }
 
-static __exit void hardware_unsetup(void)
+static void hardware_unsetup(void)
 {
 	if (nested)
 		nested_vmx_hardware_unsetup();
-- 
2.24.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help