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| author | Marc Zyngier <maz@kernel.org> | 2023-03-30 20:47:57 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-03-30 21:01:10 +0300 |
| commit | 81dc9504a7006b484cfcf074796094ee526b0c45 (patch) | |
| tree | c37c08f09c10a94f729d72457c43172fc287b3de /include/kvm | |
| parent | 1e0eec09d43a55125ff80e40b2d6e2f369a338b9 (diff) | |
| download | linux-81dc9504a7006b484cfcf074796094ee526b0c45.tar.xz | |
KVM: arm64: nv: timers: Support hyp timer emulation
Emulating EL2 also means emulating the EL2 timers. To do so, we expand
our timer framework to deal with at most 4 timers. At any given time,
two timers are using the HW timers, and the two others are purely
emulated.
The role of deciding which is which at any given time is left to a
mapping function which is called every time we need to make such a
decision.
Reviewed-by: Colton Lewis <coltonlewis@google.com>
Co-developed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230330174800.2677007-18-maz@kernel.org
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_arch_timer.h | 9 | ||||
| -rw-r--r-- | include/kvm/arm_vgic.h | 1 |
2 files changed, 8 insertions, 2 deletions
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h index 209da0c2ac9f..52008f5cff06 100644 --- a/include/kvm/arm_arch_timer.h +++ b/include/kvm/arm_arch_timer.h @@ -13,6 +13,9 @@ enum kvm_arch_timers { TIMER_PTIMER, TIMER_VTIMER, + NR_KVM_EL0_TIMERS, + TIMER_HVTIMER = NR_KVM_EL0_TIMERS, + TIMER_HPTIMER, NR_KVM_TIMERS }; @@ -21,6 +24,7 @@ enum kvm_arch_timer_regs { TIMER_REG_CVAL, TIMER_REG_TVAL, TIMER_REG_CTL, + TIMER_REG_VOFF, }; struct arch_timer_offset { @@ -76,6 +80,7 @@ struct arch_timer_context { struct timer_map { struct arch_timer_context *direct_vtimer; struct arch_timer_context *direct_ptimer; + struct arch_timer_context *emul_vtimer; struct arch_timer_context *emul_ptimer; }; @@ -114,12 +119,12 @@ void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu); void kvm_timer_init_vhe(void); -bool kvm_arch_timer_get_input_level(int vintid); - #define vcpu_timer(v) (&(v)->arch.timer_cpu) #define vcpu_get_timer(v,t) (&vcpu_timer(v)->timers[(t)]) #define vcpu_vtimer(v) (&(v)->arch.timer_cpu.timers[TIMER_VTIMER]) #define vcpu_ptimer(v) (&(v)->arch.timer_cpu.timers[TIMER_PTIMER]) +#define vcpu_hvtimer(v) (&(v)->arch.timer_cpu.timers[TIMER_HVTIMER]) +#define vcpu_hptimer(v) (&(v)->arch.timer_cpu.timers[TIMER_HPTIMER]) #define arch_timer_ctx_index(ctx) ((ctx) - vcpu_timer((ctx)->vcpu)->timers) diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index d3ad51fde9db..402b545959af 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -380,6 +380,7 @@ int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid, int kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, unsigned int host_irq, u32 vintid, struct irq_ops *ops); int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, unsigned int vintid); +int kvm_vgic_get_map(struct kvm_vcpu *vcpu, unsigned int vintid); bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int vintid); int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu); |