KVM: Drop kvm_arch_sync_events() now that all implementations are nops

Remove kvm_arch_sync_events() now that x86 no longer uses it (no other
arch has ever used it).

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-ID: <20250224235542.2562848-8-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index d919557af5e50a0d4250dd3b02cae1bfb8468d40..39dff4fa125575c7fc366ee394702240ca6db6ae 100644 (file)
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1334,8 +1334,6 @@ static inline bool kvm_system_needs_idmapped_vectors(void)
        return cpus_have_final_cap(ARM64_SPECTRE_V3A);
 }
 
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
-
 void kvm_init_host_debug_data(void);
 void kvm_vcpu_load_debug(struct kvm_vcpu *vcpu);
 void kvm_vcpu_put_debug(struct kvm_vcpu *vcpu);

diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h
index 590982cd986ec8186ade85df96e252570d2ec444..ab5b7001e2ff1122c6a13efe0959a9904c783d42 100644 (file)
--- a/arch/loongarch/include/asm/kvm_host.h
+++ b/arch/loongarch/include/asm/kvm_host.h
@@ -320,7 +320,6 @@ static inline bool kvm_is_ifetch_fault(struct kvm_vcpu_arch *arch)
 
 /* Misc */
 static inline void kvm_arch_hardware_unsetup(void) {}
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}

diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index f7222eb594ea6085ac61de8d2e9a1cf5d14c8bf4..c14b10821817b4405a02a3c6e5233425f50ab93c 100644 (file)
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -886,7 +886,6 @@ extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);
 extern int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
                             struct kvm_mips_interrupt *irq);
 
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_free_memslot(struct kvm *kvm,
                                         struct kvm_memory_slot *slot) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}

diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 6e1108f8fce6fa432764eb26b54f44c20977c564..2d139c8075773218a3e0de7cf7742da92979dbe9 100644 (file)
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -902,7 +902,6 @@ struct kvm_vcpu_arch {
 #define __KVM_HAVE_ARCH_WQP
 #define __KVM_HAVE_CREATE_DEVICE
 
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}

diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index cc33e35cd628897cfbe5b1a0225737a0589dca6d..0e9c2fab63787267be7ee82e3458b094f50cfd58 100644 (file)
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -301,8 +301,6 @@ static inline bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu)
        return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu;
 }
 
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
-
 #define KVM_RISCV_GSTAGE_TLB_MIN_ORDER         12
 
 void kvm_riscv_local_hfence_gvma_vmid_gpa(unsigned long vmid,

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 9a367866cab0eb5f24960aea9fd552e0a919cffa..424f899d81639092d0503f29edc0e30bc343fdd1 100644 (file)
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -1056,7 +1056,6 @@ bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 static inline void kvm_arch_free_memslot(struct kvm *kvm,
                                         struct kvm_memory_slot *slot) {}
 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 650ef1ae021194ce803cd1174964536c48d20581..e889b145f40ab58c6cd3a66c2a272d3e475f142e 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12757,11 +12757,6 @@ out:
        return ret;
 }
 
-void kvm_arch_sync_events(struct kvm *kvm)
-{
-
-}
-
 /**
  * __x86_set_memory_region: Setup KVM internal memory slot
  *

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f34f4cfaa5134465dc37abab5695800b254ecc77..ba6f29872ab291841cce6a0f6ab0f9690c43c324 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1746,7 +1746,6 @@ static inline void kvm_unregister_perf_callbacks(void) {}
 
 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
 void kvm_arch_destroy_vm(struct kvm *kvm);
-void kvm_arch_sync_events(struct kvm *kvm);
 
 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
 

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 28ba54b8742555b86f876906520811bcfb0ac9a1..54fa93ec7674e0d0e3358052c1ae7d5e48f8317d 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1262,7 +1262,6 @@ static void kvm_destroy_vm(struct kvm *kvm)
        kvm_destroy_pm_notifier(kvm);
        kvm_uevent_notify_change(KVM_EVENT_DESTROY_VM, kvm);
        kvm_destroy_vm_debugfs(kvm);
-       kvm_arch_sync_events(kvm);
        mutex_lock(&kvm_lock);
        list_del(&kvm->vm_list);
        mutex_unlock(&kvm_lock);