| Message ID | 20211009021236.4122790-39-seanjc@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: Halt-polling and x86 APICv overhaul | expand |
On Fri, 2021-10-08 at 19:12 -0700, Sean Christopherson wrote: > Remove kvm_arch_vcpu_(un)blocking() now that all implementations are nops. > > No functional change intended. > > Signed-off-by: Sean Christopherson <seanjc@google.com> > --- > arch/arm64/kvm/arm.c | 10 ---------- > arch/mips/include/asm/kvm_host.h | 2 -- > arch/powerpc/include/asm/kvm_host.h | 2 -- > arch/s390/include/asm/kvm_host.h | 2 -- > arch/x86/include/asm/kvm-x86-ops.h | 2 -- > arch/x86/include/asm/kvm_host.h | 13 ------------- > include/linux/kvm_host.h | 2 -- > virt/kvm/kvm_main.c | 4 ---- > 8 files changed, 37 deletions(-) > > diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c > index 9ff0e85a9f16..444d6f5a980a 100644 > --- a/arch/arm64/kvm/arm.c > +++ b/arch/arm64/kvm/arm.c > @@ -357,16 +357,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) > return kvm_timer_is_pending(vcpu); > } > > -void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) > -{ > - > -} > - > -void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) > -{ > - > -} > - > void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) > { > struct kvm_s2_mmu *mmu; > diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h > index 72b90d45a46e..28110f71089b 100644 > --- a/arch/mips/include/asm/kvm_host.h > +++ b/arch/mips/include/asm/kvm_host.h > @@ -895,8 +895,6 @@ 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) {} > static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} > -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} > -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} > > #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB > int kvm_arch_flush_remote_tlb(struct kvm *kvm); > diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h > index 4a195c161592..0dfee6866541 100644 > --- a/arch/powerpc/include/asm/kvm_host.h > +++ b/arch/powerpc/include/asm/kvm_host.h > @@ -863,7 +863,5 @@ 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_sched_in(struct kvm_vcpu *vcpu, int cpu) {} > static inline void kvm_arch_exit(void) {} > -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} > -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} > > #endif /* __POWERPC_KVM_HOST_H__ */ > diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h > index a22c9266ea05..25ed4ec66f4a 100644 > --- a/arch/s390/include/asm/kvm_host.h > +++ b/arch/s390/include/asm/kvm_host.h > @@ -1007,7 +1007,5 @@ 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_flush_shadow_memslot(struct kvm *kvm, > struct kvm_memory_slot *slot) {} > -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} > -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} > > #endif > diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h > index c2b007171abd..f2c38acdcad6 100644 > --- a/arch/x86/include/asm/kvm-x86-ops.h > +++ b/arch/x86/include/asm/kvm-x86-ops.h > @@ -96,8 +96,6 @@ KVM_X86_OP(handle_exit_irqoff) > KVM_X86_OP_NULL(request_immediate_exit) > KVM_X86_OP(sched_in) > KVM_X86_OP_NULL(update_cpu_dirty_logging) > -KVM_X86_OP_NULL(vcpu_blocking) > -KVM_X86_OP_NULL(vcpu_unblocking) > KVM_X86_OP_NULL(update_pi_irte) > KVM_X86_OP_NULL(start_assignment) > KVM_X86_OP_NULL(apicv_post_state_restore) > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > index 76a8dddc1a48..bebd42926321 100644 > --- a/arch/x86/include/asm/kvm_host.h > +++ b/arch/x86/include/asm/kvm_host.h > @@ -1445,9 +1445,6 @@ struct kvm_x86_ops { > const struct kvm_pmu_ops *pmu_ops; > const struct kvm_x86_nested_ops *nested_ops; > > - void (*vcpu_blocking)(struct kvm_vcpu *vcpu); > - void (*vcpu_unblocking)(struct kvm_vcpu *vcpu); > - > int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq, > uint32_t guest_irq, bool set); > void (*start_assignment)(struct kvm *kvm); > @@ -1904,16 +1901,6 @@ static inline bool kvm_irq_is_postable(struct kvm_lapic_irq *irq) > irq->delivery_mode == APIC_DM_LOWEST); > } > > -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) > -{ > - static_call_cond(kvm_x86_vcpu_blocking)(vcpu); > -} > - > -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) > -{ > - static_call_cond(kvm_x86_vcpu_unblocking)(vcpu); > -} > - > static inline int kvm_cpu_get_apicid(int mps_cpu) > { > #ifdef CONFIG_X86_LOCAL_APIC > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index c5961a361c73..6a84b020daa6 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -966,8 +966,6 @@ void kvm_sigset_deactivate(struct kvm_vcpu *vcpu); > > void kvm_vcpu_halt(struct kvm_vcpu *vcpu); > bool kvm_vcpu_block(struct kvm_vcpu *vcpu); > -void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); > -void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); > bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); > void kvm_vcpu_kick(struct kvm_vcpu *vcpu); > int kvm_vcpu_yield_to(struct kvm_vcpu *target); > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c > index c1850b60f38b..96de905e26e4 100644 > --- a/virt/kvm/kvm_main.c > +++ b/virt/kvm/kvm_main.c > @@ -3210,8 +3210,6 @@ bool kvm_vcpu_block(struct kvm_vcpu *vcpu) > > vcpu->stat.generic.blocking = 1; > > - kvm_arch_vcpu_blocking(vcpu); > - > prepare_to_rcuwait(wait); > for (;;) { > set_current_state(TASK_INTERRUPTIBLE); > @@ -3224,8 +3222,6 @@ bool kvm_vcpu_block(struct kvm_vcpu *vcpu) > } > finish_rcuwait(wait); > > - kvm_arch_vcpu_unblocking(vcpu); > - > vcpu->stat.generic.blocking = 0; > > return waited; Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 9ff0e85a9f16..444d6f5a980a 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -357,16 +357,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) return kvm_timer_is_pending(vcpu); } -void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) -{ - -} - -void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) -{ - -} - void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { struct kvm_s2_mmu *mmu; diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 72b90d45a46e..28110f71089b 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -895,8 +895,6 @@ 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) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB int kvm_arch_flush_remote_tlb(struct kvm *kvm); diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 4a195c161592..0dfee6866541 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -863,7 +863,5 @@ 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_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_exit(void) {} -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __POWERPC_KVM_HOST_H__ */ diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index a22c9266ea05..25ed4ec66f4a 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -1007,7 +1007,5 @@ 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_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) {} -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index c2b007171abd..f2c38acdcad6 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -96,8 +96,6 @@ KVM_X86_OP(handle_exit_irqoff) KVM_X86_OP_NULL(request_immediate_exit) KVM_X86_OP(sched_in) KVM_X86_OP_NULL(update_cpu_dirty_logging) -KVM_X86_OP_NULL(vcpu_blocking) -KVM_X86_OP_NULL(vcpu_unblocking) KVM_X86_OP_NULL(update_pi_irte) KVM_X86_OP_NULL(start_assignment) KVM_X86_OP_NULL(apicv_post_state_restore) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 76a8dddc1a48..bebd42926321 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1445,9 +1445,6 @@ struct kvm_x86_ops { const struct kvm_pmu_ops *pmu_ops; const struct kvm_x86_nested_ops *nested_ops; - void (*vcpu_blocking)(struct kvm_vcpu *vcpu); - void (*vcpu_unblocking)(struct kvm_vcpu *vcpu); - int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq, uint32_t guest_irq, bool set); void (*start_assignment)(struct kvm *kvm); @@ -1904,16 +1901,6 @@ static inline bool kvm_irq_is_postable(struct kvm_lapic_irq *irq) irq->delivery_mode == APIC_DM_LOWEST); } -static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) -{ - static_call_cond(kvm_x86_vcpu_blocking)(vcpu); -} - -static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) -{ - static_call_cond(kvm_x86_vcpu_unblocking)(vcpu); -} - static inline int kvm_cpu_get_apicid(int mps_cpu) { #ifdef CONFIG_X86_LOCAL_APIC diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c5961a361c73..6a84b020daa6 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -966,8 +966,6 @@ void kvm_sigset_deactivate(struct kvm_vcpu *vcpu); void kvm_vcpu_halt(struct kvm_vcpu *vcpu); bool kvm_vcpu_block(struct kvm_vcpu *vcpu); -void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); -void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); void kvm_vcpu_kick(struct kvm_vcpu *vcpu); int kvm_vcpu_yield_to(struct kvm_vcpu *target); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index c1850b60f38b..96de905e26e4 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3210,8 +3210,6 @@ bool kvm_vcpu_block(struct kvm_vcpu *vcpu) vcpu->stat.generic.blocking = 1; - kvm_arch_vcpu_blocking(vcpu); - prepare_to_rcuwait(wait); for (;;) { set_current_state(TASK_INTERRUPTIBLE); @@ -3224,8 +3222,6 @@ bool kvm_vcpu_block(struct kvm_vcpu *vcpu) } finish_rcuwait(wait); - kvm_arch_vcpu_unblocking(vcpu); - vcpu->stat.generic.blocking = 0; return waited;
Remove kvm_arch_vcpu_(un)blocking() now that all implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> --- arch/arm64/kvm/arm.c | 10 ---------- arch/mips/include/asm/kvm_host.h | 2 -- arch/powerpc/include/asm/kvm_host.h | 2 -- arch/s390/include/asm/kvm_host.h | 2 -- arch/x86/include/asm/kvm-x86-ops.h | 2 -- arch/x86/include/asm/kvm_host.h | 13 ------------- include/linux/kvm_host.h | 2 -- virt/kvm/kvm_main.c | 4 ---- 8 files changed, 37 deletions(-)