aboutsummaryrefslogtreecommitdiff
path: root/virt/kvm/arm
diff options
context:
space:
mode:
Diffstat (limited to 'virt/kvm/arm')
-rw-r--r--virt/kvm/arm/vgic-v2.c1
-rw-r--r--virt/kvm/arm/vgic-v3.c1
-rw-r--r--virt/kvm/arm/vgic.c53
3 files changed, 17 insertions, 38 deletions
diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c
index 8d7b04db8471..c0f5d7fad9ea 100644
--- a/virt/kvm/arm/vgic-v2.c
+++ b/virt/kvm/arm/vgic-v2.c
@@ -158,6 +158,7 @@ static void vgic_v2_enable(struct kvm_vcpu *vcpu)
* anyway.
*/
vcpu->arch.vgic_cpu.vgic_v2.vgic_vmcr = 0;
+ vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr = ~0;
/* Get the show on the road... */
vcpu->arch.vgic_cpu.vgic_v2.vgic_hcr = GICH_HCR_EN;
diff --git a/virt/kvm/arm/vgic-v3.c b/virt/kvm/arm/vgic-v3.c
index 7dd5d62f10a1..92003cb61a0a 100644
--- a/virt/kvm/arm/vgic-v3.c
+++ b/virt/kvm/arm/vgic-v3.c
@@ -193,6 +193,7 @@ static void vgic_v3_enable(struct kvm_vcpu *vcpu)
* anyway.
*/
vgic_v3->vgic_vmcr = 0;
+ vgic_v3->vgic_elrsr = ~0;
/*
* If we are emulating a GICv3, we do it in an non-GICv2-compatible
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index d4669eb29b77..265a41035728 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -108,6 +108,7 @@ static void vgic_retire_disabled_irqs(struct kvm_vcpu *vcpu);
static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu);
static struct vgic_lr vgic_get_lr(const struct kvm_vcpu *vcpu, int lr);
static void vgic_set_lr(struct kvm_vcpu *vcpu, int lr, struct vgic_lr lr_desc);
+static u64 vgic_get_elrsr(struct kvm_vcpu *vcpu);
static struct irq_phys_map *vgic_irq_map_search(struct kvm_vcpu *vcpu,
int virt_irq);
static int compute_pending_for_cpu(struct kvm_vcpu *vcpu);
@@ -691,9 +692,11 @@ bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
void vgic_unqueue_irqs(struct kvm_vcpu *vcpu)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+ u64 elrsr = vgic_get_elrsr(vcpu);
+ unsigned long *elrsr_ptr = u64_to_bitmask(&elrsr);
int i;
- for_each_set_bit(i, vgic_cpu->lr_used, vgic_cpu->nr_lr) {
+ for_each_clear_bit(i, elrsr_ptr, vgic_cpu->nr_lr) {
struct vgic_lr lr = vgic_get_lr(vcpu, i);
/*
@@ -1098,7 +1101,6 @@ static inline void vgic_enable(struct kvm_vcpu *vcpu)
static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu)
{
- struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_lr vlr = vgic_get_lr(vcpu, lr_nr);
/*
@@ -1112,8 +1114,6 @@ static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu)
vlr.state = 0;
vgic_set_lr(vcpu, lr_nr, vlr);
- clear_bit(lr_nr, vgic_cpu->lr_used);
- vgic_cpu->vgic_irq_lr_map[irq] = LR_EMPTY;
vgic_sync_lr_elrsr(vcpu, lr_nr, vlr);
}
@@ -1128,10 +1128,11 @@ static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu)
*/
static void vgic_retire_disabled_irqs(struct kvm_vcpu *vcpu)
{
- struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+ u64 elrsr = vgic_get_elrsr(vcpu);
+ unsigned long *elrsr_ptr = u64_to_bitmask(&elrsr);
int lr;
- for_each_set_bit(lr, vgic_cpu->lr_used, vgic->nr_lr) {
+ for_each_clear_bit(lr, elrsr_ptr, vgic->nr_lr) {
struct vgic_lr vlr = vgic_get_lr(vcpu, lr);
if (!vgic_irq_is_enabled(vcpu, vlr.irq)) {
@@ -1188,8 +1189,9 @@ static void vgic_queue_irq_to_lr(struct kvm_vcpu *vcpu, int irq,
*/
bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
{
- struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
+ u64 elrsr = vgic_get_elrsr(vcpu);
+ unsigned long *elrsr_ptr = u64_to_bitmask(&elrsr);
struct vgic_lr vlr;
int lr;
@@ -1200,28 +1202,22 @@ bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
kvm_debug("Queue IRQ%d\n", irq);
- lr = vgic_cpu->vgic_irq_lr_map[irq];
-
/* Do we have an active interrupt for the same CPUID? */
- if (lr != LR_EMPTY) {
+ for_each_clear_bit(lr, elrsr_ptr, vgic->nr_lr) {
vlr = vgic_get_lr(vcpu, lr);
- if (vlr.source == sgi_source_id) {
+ if (vlr.irq == irq && vlr.source == sgi_source_id) {
kvm_debug("LR%d piggyback for IRQ%d\n", lr, vlr.irq);
- BUG_ON(!test_bit(lr, vgic_cpu->lr_used));
vgic_queue_irq_to_lr(vcpu, irq, lr, vlr);
return true;
}
}
/* Try to use another LR for this interrupt */
- lr = find_first_zero_bit((unsigned long *)vgic_cpu->lr_used,
- vgic->nr_lr);
+ lr = find_first_bit(elrsr_ptr, vgic->nr_lr);
if (lr >= vgic->nr_lr)
return false;
kvm_debug("LR%d allocated for IRQ%d %x\n", lr, irq, sgi_source_id);
- vgic_cpu->vgic_irq_lr_map[irq] = lr;
- set_bit(lr, vgic_cpu->lr_used);
vlr.irq = irq;
vlr.source = sgi_source_id;
@@ -1456,7 +1452,6 @@ static bool vgic_sync_hwirq(struct kvm_vcpu *vcpu, int lr, struct vgic_lr vlr)
/* Sync back the VGIC state after a guest run */
static void __kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu)
{
- struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
u64 elrsr;
unsigned long *elrsr_ptr;
@@ -1469,22 +1464,10 @@ static void __kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu)
/* Deal with HW interrupts, and clear mappings for empty LRs */
for (lr = 0; lr < vgic->nr_lr; lr++) {
- struct vgic_lr vlr;
-
- if (!test_bit(lr, vgic_cpu->lr_used))
- continue;
-
- vlr = vgic_get_lr(vcpu, lr);
- if (vgic_sync_hwirq(vcpu, lr, vlr))
- level_pending = true;
-
- if (!test_bit(lr, elrsr_ptr))
- continue;
-
- clear_bit(lr, vgic_cpu->lr_used);
+ struct vgic_lr vlr = vgic_get_lr(vcpu, lr);
+ level_pending |= vgic_sync_hwirq(vcpu, lr, vlr);
BUG_ON(vlr.irq >= dist->nr_irqs);
- vgic_cpu->vgic_irq_lr_map[vlr.irq] = LR_EMPTY;
}
/* Check if we still have something up our sleeve... */
@@ -1912,12 +1895,10 @@ void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)
kfree(vgic_cpu->pending_shared);
kfree(vgic_cpu->active_shared);
kfree(vgic_cpu->pend_act_shared);
- kfree(vgic_cpu->vgic_irq_lr_map);
vgic_destroy_irq_phys_map(vcpu->kvm, &vgic_cpu->irq_phys_map_list);
vgic_cpu->pending_shared = NULL;
vgic_cpu->active_shared = NULL;
vgic_cpu->pend_act_shared = NULL;
- vgic_cpu->vgic_irq_lr_map = NULL;
}
static int vgic_vcpu_init_maps(struct kvm_vcpu *vcpu, int nr_irqs)
@@ -1928,18 +1909,14 @@ static int vgic_vcpu_init_maps(struct kvm_vcpu *vcpu, int nr_irqs)
vgic_cpu->pending_shared = kzalloc(sz, GFP_KERNEL);
vgic_cpu->active_shared = kzalloc(sz, GFP_KERNEL);
vgic_cpu->pend_act_shared = kzalloc(sz, GFP_KERNEL);
- vgic_cpu->vgic_irq_lr_map = kmalloc(nr_irqs, GFP_KERNEL);
if (!vgic_cpu->pending_shared
|| !vgic_cpu->active_shared
- || !vgic_cpu->pend_act_shared
- || !vgic_cpu->vgic_irq_lr_map) {
+ || !vgic_cpu->pend_act_shared) {
kvm_vgic_vcpu_destroy(vcpu);
return -ENOMEM;
}
- memset(vgic_cpu->vgic_irq_lr_map, LR_EMPTY, nr_irqs);
-
/*
* Store the number of LRs per vcpu, so we don't have to go
* all the way to the distributor structure to find out. Only
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 20:39:18 +0000