| Message ID | 20211009021236.4122790-35-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: > Drop kvm_x86_ops' pre/post_block() now that all implementations are nops. > > No functional change intended. > > Signed-off-by: Sean Christopherson <seanjc@google.com> > --- > arch/x86/include/asm/kvm-x86-ops.h | 2 -- > arch/x86/include/asm/kvm_host.h | 12 ------------ > arch/x86/kvm/vmx/vmx.c | 13 ------------- > arch/x86/kvm/x86.c | 6 +----- > 4 files changed, 1 insertion(+), 32 deletions(-) > > diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h > index cefe1d81e2e8..c2b007171abd 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(pre_block) > -KVM_X86_OP_NULL(post_block) > KVM_X86_OP_NULL(vcpu_blocking) > KVM_X86_OP_NULL(vcpu_unblocking) > KVM_X86_OP_NULL(update_pi_irte) > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > index 328103a520d3..76a8dddc1a48 100644 > --- a/arch/x86/include/asm/kvm_host.h > +++ b/arch/x86/include/asm/kvm_host.h > @@ -1445,18 +1445,6 @@ struct kvm_x86_ops { > const struct kvm_pmu_ops *pmu_ops; > const struct kvm_x86_nested_ops *nested_ops; > > - /* > - * Architecture specific hooks for vCPU blocking due to > - * HLT instruction. > - * Returns for .pre_block(): > - * - 0 means continue to block the vCPU. > - * - 1 means we cannot block the vCPU since some event > - * happens during this period, such as, 'ON' bit in > - * posted-interrupts descriptor is set. > - */ > - int (*pre_block)(struct kvm_vcpu *vcpu); > - void (*post_block)(struct kvm_vcpu *vcpu); > - > void (*vcpu_blocking)(struct kvm_vcpu *vcpu); > void (*vcpu_unblocking)(struct kvm_vcpu *vcpu); > > diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c > index a24f19874716..13e732a818f3 100644 > --- a/arch/x86/kvm/vmx/vmx.c > +++ b/arch/x86/kvm/vmx/vmx.c > @@ -7462,16 +7462,6 @@ void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu) > secondary_exec_controls_clearbit(vmx, SECONDARY_EXEC_ENABLE_PML); > } > > -static int vmx_pre_block(struct kvm_vcpu *vcpu) > -{ > - return 0; > -} > - > -static void vmx_post_block(struct kvm_vcpu *vcpu) > -{ > - > -} > - > static void vmx_setup_mce(struct kvm_vcpu *vcpu) > { > if (vcpu->arch.mcg_cap & MCG_LMCE_P) > @@ -7665,9 +7655,6 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { > .cpu_dirty_log_size = PML_ENTITY_NUM, > .update_cpu_dirty_logging = vmx_update_cpu_dirty_logging, > > - .pre_block = vmx_pre_block, > - .post_block = vmx_post_block, > - > .pmu_ops = &intel_pmu_ops, > .nested_ops = &vmx_nested_ops, > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 909e932a7ae7..9643f23c28c7 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -9898,8 +9898,7 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu) > { > bool hv_timer; > > - if (!kvm_arch_vcpu_runnable(vcpu) && > - (!kvm_x86_ops.pre_block || static_call(kvm_x86_pre_block)(vcpu) == 0)) { > + if (!kvm_arch_vcpu_runnable(vcpu)) { > /* > * Switch to the software timer before halt-polling/blocking as > * the guest's timer may be a break event for the vCPU, and the > @@ -9921,9 +9920,6 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu) > if (hv_timer) > kvm_lapic_switch_to_hv_timer(vcpu); > > - if (kvm_x86_ops.post_block) > - static_call(kvm_x86_post_block)(vcpu); > - > if (!kvm_check_request(KVM_REQ_UNHALT, vcpu)) > return 1; > } Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Best regards, Maxim Levitsky
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index cefe1d81e2e8..c2b007171abd 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(pre_block) -KVM_X86_OP_NULL(post_block) KVM_X86_OP_NULL(vcpu_blocking) KVM_X86_OP_NULL(vcpu_unblocking) KVM_X86_OP_NULL(update_pi_irte) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 328103a520d3..76a8dddc1a48 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1445,18 +1445,6 @@ struct kvm_x86_ops { const struct kvm_pmu_ops *pmu_ops; const struct kvm_x86_nested_ops *nested_ops; - /* - * Architecture specific hooks for vCPU blocking due to - * HLT instruction. - * Returns for .pre_block(): - * - 0 means continue to block the vCPU. - * - 1 means we cannot block the vCPU since some event - * happens during this period, such as, 'ON' bit in - * posted-interrupts descriptor is set. - */ - int (*pre_block)(struct kvm_vcpu *vcpu); - void (*post_block)(struct kvm_vcpu *vcpu); - void (*vcpu_blocking)(struct kvm_vcpu *vcpu); void (*vcpu_unblocking)(struct kvm_vcpu *vcpu); diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index a24f19874716..13e732a818f3 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7462,16 +7462,6 @@ void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu) secondary_exec_controls_clearbit(vmx, SECONDARY_EXEC_ENABLE_PML); } -static int vmx_pre_block(struct kvm_vcpu *vcpu) -{ - return 0; -} - -static void vmx_post_block(struct kvm_vcpu *vcpu) -{ - -} - static void vmx_setup_mce(struct kvm_vcpu *vcpu) { if (vcpu->arch.mcg_cap & MCG_LMCE_P) @@ -7665,9 +7655,6 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { .cpu_dirty_log_size = PML_ENTITY_NUM, .update_cpu_dirty_logging = vmx_update_cpu_dirty_logging, - .pre_block = vmx_pre_block, - .post_block = vmx_post_block, - .pmu_ops = &intel_pmu_ops, .nested_ops = &vmx_nested_ops, diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 909e932a7ae7..9643f23c28c7 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9898,8 +9898,7 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu) { bool hv_timer; - if (!kvm_arch_vcpu_runnable(vcpu) && - (!kvm_x86_ops.pre_block || static_call(kvm_x86_pre_block)(vcpu) == 0)) { + if (!kvm_arch_vcpu_runnable(vcpu)) { /* * Switch to the software timer before halt-polling/blocking as * the guest's timer may be a break event for the vCPU, and the @@ -9921,9 +9920,6 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu) if (hv_timer) kvm_lapic_switch_to_hv_timer(vcpu); - if (kvm_x86_ops.post_block) - static_call(kvm_x86_post_block)(vcpu); - if (!kvm_check_request(KVM_REQ_UNHALT, vcpu)) return 1; }
Drop kvm_x86_ops' pre/post_block() now that all implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> --- arch/x86/include/asm/kvm-x86-ops.h | 2 -- arch/x86/include/asm/kvm_host.h | 12 ------------ arch/x86/kvm/vmx/vmx.c | 13 ------------- arch/x86/kvm/x86.c | 6 +----- 4 files changed, 1 insertion(+), 32 deletions(-)