From 26caea7693cb99833fe4ecc544c842289d6b3f69 Mon Sep 17 00:00:00 2001 From: Pavel Fedin Date: Tue, 27 Oct 2015 11:37:31 +0300 Subject: [PATCH] KVM: arm/arm64: Merge vgic_set_lr() and vgic_sync_lr_elrsr() Now we see that vgic_set_lr() and vgic_sync_lr_elrsr() are always used together. Merge them into one function, saving from second vgic_ops dereferencing every time. Signed-off-by: Pavel Fedin Signed-off-by: Christoffer Dall --- include/kvm/arm_vgic.h | 1 - virt/kvm/arm/vgic-v2.c | 5 ----- virt/kvm/arm/vgic-v3.c | 5 ----- virt/kvm/arm/vgic.c | 14 ++------------ 4 files changed, 2 insertions(+), 23 deletions(-) diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 3936bf802e1d..f62addc17dcf 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -112,7 +112,6 @@ struct vgic_vmcr { struct vgic_ops { struct vgic_lr (*get_lr)(const struct kvm_vcpu *, int); void (*set_lr)(struct kvm_vcpu *, int, struct vgic_lr); - void (*sync_lr_elrsr)(struct kvm_vcpu *, int, struct vgic_lr); u64 (*get_elrsr)(const struct kvm_vcpu *vcpu); u64 (*get_eisr)(const struct kvm_vcpu *vcpu); void (*clear_eisr)(struct kvm_vcpu *vcpu); diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c index c0f5d7fad9ea..ff02f08df74d 100644 --- a/virt/kvm/arm/vgic-v2.c +++ b/virt/kvm/arm/vgic-v2.c @@ -79,11 +79,7 @@ static void vgic_v2_set_lr(struct kvm_vcpu *vcpu, int lr, lr_val |= (lr_desc.source << GICH_LR_PHYSID_CPUID_SHIFT); vcpu->arch.vgic_cpu.vgic_v2.vgic_lr[lr] = lr_val; -} -static void vgic_v2_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr, - struct vgic_lr lr_desc) -{ if (!(lr_desc.state & LR_STATE_MASK)) vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr |= (1ULL << lr); else @@ -167,7 +163,6 @@ static void vgic_v2_enable(struct kvm_vcpu *vcpu) static const struct vgic_ops vgic_v2_ops = { .get_lr = vgic_v2_get_lr, .set_lr = vgic_v2_set_lr, - .sync_lr_elrsr = vgic_v2_sync_lr_elrsr, .get_elrsr = vgic_v2_get_elrsr, .get_eisr = vgic_v2_get_eisr, .clear_eisr = vgic_v2_clear_eisr, diff --git a/virt/kvm/arm/vgic-v3.c b/virt/kvm/arm/vgic-v3.c index 92003cb61a0a..487d6357b7e7 100644 --- a/virt/kvm/arm/vgic-v3.c +++ b/virt/kvm/arm/vgic-v3.c @@ -112,11 +112,7 @@ static void vgic_v3_set_lr(struct kvm_vcpu *vcpu, int lr, } vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[LR_INDEX(lr)] = lr_val; -} -static void vgic_v3_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr, - struct vgic_lr lr_desc) -{ if (!(lr_desc.state & LR_STATE_MASK)) vcpu->arch.vgic_cpu.vgic_v3.vgic_elrsr |= (1U << lr); else @@ -212,7 +208,6 @@ static void vgic_v3_enable(struct kvm_vcpu *vcpu) static const struct vgic_ops vgic_v3_ops = { .get_lr = vgic_v3_get_lr, .set_lr = vgic_v3_set_lr, - .sync_lr_elrsr = vgic_v3_sync_lr_elrsr, .get_elrsr = vgic_v3_get_elrsr, .get_eisr = vgic_v3_get_eisr, .clear_eisr = vgic_v3_clear_eisr, diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 96e45f3da534..fe451d4885ae 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1032,12 +1032,6 @@ static void vgic_set_lr(struct kvm_vcpu *vcpu, int lr, vgic_ops->set_lr(vcpu, lr, vlr); } -static void vgic_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr, - struct vgic_lr vlr) -{ - vgic_ops->sync_lr_elrsr(vcpu, lr, vlr); -} - static inline u64 vgic_get_elrsr(struct kvm_vcpu *vcpu) { return vgic_ops->get_elrsr(vcpu); @@ -1100,7 +1094,6 @@ static void vgic_retire_lr(int lr_nr, struct kvm_vcpu *vcpu) vlr.state = 0; vgic_set_lr(vcpu, lr_nr, vlr); - vgic_sync_lr_elrsr(vcpu, lr_nr, vlr); } /* @@ -1162,7 +1155,6 @@ static void vgic_queue_irq_to_lr(struct kvm_vcpu *vcpu, int irq, } vgic_set_lr(vcpu, lr_nr, vlr); - vgic_sync_lr_elrsr(vcpu, lr_nr, vlr); } /* @@ -1340,8 +1332,6 @@ static int process_queued_irq(struct kvm_vcpu *vcpu, vlr.hwirq = 0; vgic_set_lr(vcpu, lr, vlr); - vgic_sync_lr_elrsr(vcpu, lr, vlr); - return pending; } @@ -1442,8 +1432,6 @@ static void __kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu) bool level_pending; level_pending = vgic_process_maintenance(vcpu); - elrsr = vgic_get_elrsr(vcpu); - elrsr_ptr = u64_to_bitmask(&elrsr); /* Deal with HW interrupts, and clear mappings for empty LRs */ for (lr = 0; lr < vgic->nr_lr; lr++) { @@ -1454,6 +1442,8 @@ static void __kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu) } /* Check if we still have something up our sleeve... */ + elrsr = vgic_get_elrsr(vcpu); + elrsr_ptr = u64_to_bitmask(&elrsr); pending = find_first_zero_bit(elrsr_ptr, vgic->nr_lr); if (level_pending || pending < vgic->nr_lr) set_bit(vcpu->vcpu_id, dist->irq_pending_on_cpu); -- 2.20.1