KVM: Drop kvm_arch_vcpu_init() and kvm_arch_vcpu_uninit()

Remove kvm_arch_vcpu_init() and kvm_arch_vcpu_uninit() now that all
arch specific implementations are nops.

Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index de81dd8..e26cad6 100644 (file)
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -363,7 +363,6 @@ struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr);
 static inline bool kvm_arch_requires_vhe(void) { return false; }
 static inline void kvm_arch_hardware_unsetup(void) {}
 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
-static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
 static inline void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu) {}

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 6402b2d..8ab6294 100644 (file)
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -54,7 +54,6 @@ int kvm_arm_init_sve(void);
 int __attribute_const__ kvm_target_cpu(void);
 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
 void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu);
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
 int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext);
 void __extended_idmap_trampoline(phys_addr_t boot_pgd, phys_addr_t idmap_start);
 

diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index ff3512a..30b7ea6 100644 (file)
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -204,11 +204,6 @@ bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu)
        return true;
 }
 
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
-{
-
-}
-
 void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu)
 {
        kfree(vcpu->arch.sve_state);

diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 879a7cb..2606f3f 100644 (file)
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -1230,16 +1230,6 @@ static enum hrtimer_restart kvm_mips_comparecount_wakeup(struct hrtimer *timer)
        return kvm_mips_count_timeout(vcpu);
 }
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
-{
-       return 0;
-}
-
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
-{
-
-}
-
 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
                                  struct kvm_translation *tr)
 {

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 4fbf869..1af96fb 100644 (file)
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -801,16 +801,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
        return kvmppc_core_pending_dec(vcpu);
 }
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
-{
-       return 0;
-}
-
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
-{
-
-}
-
 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 {
 #ifdef CONFIG_BOOKE

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 02f4c21..11ecc40 100644 (file)
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -914,7 +914,6 @@ extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 
 static inline void kvm_arch_hardware_disable(void) {}
 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
-static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 static inline void kvm_arch_free_memslot(struct kvm *kvm,
                struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index a1bb47c..8646c99 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2700,11 +2700,6 @@ static int sca_can_add_vcpu(struct kvm *kvm, unsigned int id)
        return rc == 0 && id < KVM_S390_ESCA_CPU_SLOTS;
 }
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
-{
-       return 0;
-}
-
 /* needs disabled preemption to protect from TOD sync and vcpu_load/put */
 static void __start_cpu_timer_accounting(struct kvm_vcpu *vcpu)
 {

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4469617..985066e 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -9575,16 +9575,6 @@ bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
 struct static_key kvm_no_apic_vcpu __read_mostly;
 EXPORT_SYMBOL_GPL(kvm_no_apic_vcpu);
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
-{
-       return 0;
-}
-
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
-{
-
-}
-
 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu)
 {
        struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 87ca40f..a654cf6 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -864,9 +864,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
 int kvm_arch_init(void *opaque);
 void kvm_arch_exit(void);
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
-void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
-
 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
 
 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);

diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 937b4c7..1cfc108 100644 (file)
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -360,11 +360,6 @@ void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
        preempt_enable();
 }
 
-int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
-{
-       return 0;
-}
-
 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 {
        int *last_ran;

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8e9d244..6b49603 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -324,7 +324,6 @@ void kvm_reload_remote_mmus(struct kvm *kvm)
 static int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
 {
        struct page *page;
-       int r;
 
        mutex_init(&vcpu->mutex);
        vcpu->cpu = -1;
@@ -338,10 +337,8 @@ static int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
        INIT_LIST_HEAD(&vcpu->blocked_vcpu_list);
 
        page = alloc_page(GFP_KERNEL | __GFP_ZERO);
-       if (!page) {
-               r = -ENOMEM;
-               goto fail;
-       }
+       if (!page)
+               return -ENOMEM;
        vcpu->run = page_address(page);
 
        kvm_vcpu_set_in_spin_loop(vcpu, false);
@@ -350,15 +347,7 @@ static int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
        vcpu->ready = false;
        preempt_notifier_init(&vcpu->preempt_notifier, &kvm_preempt_ops);
 
-       r = kvm_arch_vcpu_init(vcpu);
-       if (r < 0)
-               goto fail_free_run;
        return 0;
-
-fail_free_run:
-       free_page((unsigned long)vcpu->run);
-fail:
-       return r;
 }
 
 static void kvm_vcpu_uninit(struct kvm_vcpu *vcpu)
@@ -369,7 +358,6 @@ static void kvm_vcpu_uninit(struct kvm_vcpu *vcpu)
         * descriptors are already gone.
         */
        put_pid(rcu_dereference_protected(vcpu->pid, 1));
-       kvm_arch_vcpu_uninit(vcpu);
        free_page((unsigned long)vcpu->run);
 }