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KVM: arm64: timers: Abstract per-timer IRQ access

Browse source 
As we are about to move the location of the per-timer IRQ into
the VM structure, abstract the location of the IRQ behind an
accessor. This will make the repainting sligntly less painful.

Reviewed-by: Colton Lewis <coltonlewis@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230330174800.2677007-11-maz@kernel.org
This commit is contained in:
Marc Zyngier 2023-03-30 18:47:50 +01:00
parent 5591805d2c
commit 33c549460e
2 changed files with 21 additions and 19 deletions
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38
arch/arm64/kvm/arch_timer.c
View file

@ -392,12 +392,12 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level,
int ret;
timer_ctx->irq.level = new_level;
trace_kvm_timer_update_irq(vcpu->vcpu_id, timer_ctx->irq.irq,
trace_kvm_timer_update_irq(vcpu->vcpu_id, timer_irq(timer_ctx),
timer_ctx->irq.level);
if (!userspace_irqchip(vcpu->kvm)) {
ret = kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id,
timer_ctx->irq.irq,
timer_irq(timer_ctx),
timer_ctx->irq.level,
timer_ctx);
WARN_ON(ret);
@ -607,7 +607,7 @@ static void kvm_timer_vcpu_load_gic(struct arch_timer_context *ctx)
kvm_timer_update_irq(ctx->vcpu, kvm_timer_should_fire(ctx), ctx);
if (irqchip_in_kernel(vcpu->kvm))
phys_active = kvm_vgic_map_is_active(vcpu, ctx->irq.irq);
phys_active = kvm_vgic_map_is_active(vcpu, timer_irq(ctx));
phys_active |= ctx->irq.level;
@ -825,9 +825,9 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu)
vcpu_get_timer(vcpu, i));
if (irqchip_in_kernel(vcpu->kvm)) {
kvm_vgic_reset_mapped_irq(vcpu, map.direct_vtimer->irq.irq);
kvm_vgic_reset_mapped_irq(vcpu, timer_irq(map.direct_vtimer));
if (map.direct_ptimer)
kvm_vgic_reset_mapped_irq(vcpu, map.direct_ptimer->irq.irq);
kvm_vgic_reset_mapped_irq(vcpu, timer_irq(map.direct_ptimer));
}
}
@ -851,7 +851,7 @@ static void timer_context_init(struct kvm_vcpu *vcpu, int timerid)
hrtimer_init(&ctxt->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
ctxt->hrtimer.function = kvm_hrtimer_expire;
ctxt->irq.irq = default_ppi[timerid];
timer_irq(ctxt) = default_ppi[timerid];
switch (timerid) {
case TIMER_PTIMER:
@ -1295,19 +1295,19 @@ static bool timer_irqs_are_valid(struct kvm_vcpu *vcpu)
int vtimer_irq, ptimer_irq, ret;
unsigned long i;
vtimer_irq = vcpu_vtimer(vcpu)->irq.irq;
vtimer_irq = timer_irq(vcpu_vtimer(vcpu));
ret = kvm_vgic_set_owner(vcpu, vtimer_irq, vcpu_vtimer(vcpu));
if (ret)
return false;
ptimer_irq = vcpu_ptimer(vcpu)->irq.irq;
ptimer_irq = timer_irq(vcpu_ptimer(vcpu));
ret = kvm_vgic_set_owner(vcpu, ptimer_irq, vcpu_ptimer(vcpu));
if (ret)
return false;
kvm_for_each_vcpu(i, vcpu, vcpu->kvm) {
if (vcpu_vtimer(vcpu)->irq.irq != vtimer_irq ||
vcpu_ptimer(vcpu)->irq.irq != ptimer_irq)
if (timer_irq(vcpu_vtimer(vcpu)) != vtimer_irq ||
timer_irq(vcpu_ptimer(vcpu)) != ptimer_irq)
return false;
}
@ -1322,9 +1322,9 @@ bool kvm_arch_timer_get_input_level(int vintid)
if (WARN(!vcpu, "No vcpu context!\n"))
return false;
if (vintid == vcpu_vtimer(vcpu)->irq.irq)
if (vintid == timer_irq(vcpu_vtimer(vcpu)))
timer = vcpu_vtimer(vcpu);
else if (vintid == vcpu_ptimer(vcpu)->irq.irq)
else if (vintid == timer_irq(vcpu_ptimer(vcpu)))
timer = vcpu_ptimer(vcpu);
else
BUG();
@ -1358,7 +1358,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
ret = kvm_vgic_map_phys_irq(vcpu,
map.direct_vtimer->host_timer_irq,
map.direct_vtimer->irq.irq,
timer_irq(map.direct_vtimer),
&arch_timer_irq_ops);
if (ret)
return ret;
@ -1366,7 +1366,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
if (map.direct_ptimer) {
ret = kvm_vgic_map_phys_irq(vcpu,
map.direct_ptimer->host_timer_irq,
map.direct_ptimer->irq.irq,
timer_irq(map.direct_ptimer),
&arch_timer_irq_ops);
}
@ -1391,8 +1391,8 @@ static void set_timer_irqs(struct kvm *kvm, int vtimer_irq, int ptimer_irq)
unsigned long i;
kvm_for_each_vcpu(i, vcpu, kvm) {
vcpu_vtimer(vcpu)->irq.irq = vtimer_irq;
vcpu_ptimer(vcpu)->irq.irq = ptimer_irq;
timer_irq(vcpu_vtimer(vcpu)) = vtimer_irq;
timer_irq(vcpu_ptimer(vcpu)) = ptimer_irq;
}
}
@ -1417,10 +1417,10 @@ int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr)
switch (attr->attr) {
case KVM_ARM_VCPU_TIMER_IRQ_VTIMER:
set_timer_irqs(vcpu->kvm, irq, ptimer->irq.irq);
set_timer_irqs(vcpu->kvm, irq, timer_irq(ptimer));
break;
case KVM_ARM_VCPU_TIMER_IRQ_PTIMER:
set_timer_irqs(vcpu->kvm, vtimer->irq.irq, irq);
set_timer_irqs(vcpu->kvm, timer_irq(vtimer), irq);
break;
default:
return -ENXIO;
@ -1446,7 +1446,7 @@ int kvm_arm_timer_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr)
return -ENXIO;
}
irq = timer->irq.irq;
irq = timer_irq(timer);
return put_user(irq, uaddr);
}

2
include/kvm/arm_arch_timer.h
View file

@ -109,6 +109,8 @@ bool kvm_arch_timer_get_input_level(int vintid);
#define arch_timer_ctx_index(ctx) ((ctx) - vcpu_timer((ctx)->vcpu)->timers)
#define timer_irq(ctx) ((ctx)->irq.irq)
u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu,
enum kvm_arch_timers tmr,
enum kvm_arch_timer_regs treg);