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| author | Marc Zyngier <marc.zyngier@arm.com> | 2013-01-22 00:36:12 (GMT) |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-02-11 18:58:55 (GMT) |
| commit | 1a89dd9113badd7487313410a5f2e09b2944f92b (patch) | |
| tree | bc787a59d8a436dc5bb4916218dac77ac854bc9d /arch/arm/kvm/arm.c | |
| parent | 1638a12d4ee519ed397f4b9e6c088faed155d164 (diff) | |
| download | linux-1a89dd9113badd7487313410a5f2e09b2944f92b.tar.xz | |
ARM: KVM: Initial VGIC infrastructure code
Wire the basic framework code for VGIC support and the initial in-kernel
MMIO support code for the VGIC, used for the distributor emulation.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/kvm/arm.c')
| -rw-r--r-- | arch/arm/kvm/arm.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 0cf144f..7305aef 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -62,6 +62,8 @@ static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1); static u8 kvm_next_vmid; static DEFINE_SPINLOCK(kvm_vmid_lock); +static bool vgic_present; + static void kvm_arm_set_running_vcpu(struct kvm_vcpu *vcpu) { BUG_ON(preemptible()); @@ -184,6 +186,9 @@ int kvm_dev_ioctl_check_extension(long ext) { int r; switch (ext) { + case KVM_CAP_IRQCHIP: + r = vgic_present; + break; case KVM_CAP_USER_MEMORY: case KVM_CAP_SYNC_MMU: case KVM_CAP_DESTROY_MEMORY_REGION_WORKS: @@ -315,8 +320,16 @@ int __attribute_const__ kvm_target_cpu(void) int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) { + int ret; + /* Force users to call KVM_ARM_VCPU_INIT */ vcpu->arch.target = -1; + + /* Set up VGIC */ + ret = kvm_vgic_vcpu_init(vcpu); + if (ret) + return ret; + return 0; } @@ -374,7 +387,7 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, */ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) { - return !!v->arch.irq_lines; + return !!v->arch.irq_lines || kvm_vgic_vcpu_pending_irq(v); } /* Just ensure a guest exit from a particular CPU */ @@ -693,6 +706,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) if (vcpu->arch.pause) vcpu_pause(vcpu); + kvm_vgic_flush_hwstate(vcpu); + local_irq_disable(); /* @@ -705,6 +720,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) if (ret <= 0 || need_new_vmid_gen(vcpu->kvm)) { local_irq_enable(); + kvm_vgic_sync_hwstate(vcpu); continue; } @@ -737,6 +753,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) * Back from guest *************************************************************/ + kvm_vgic_sync_hwstate(vcpu); + ret = handle_exit(vcpu, run, ret); } @@ -1011,6 +1029,13 @@ static int init_hyp_mode(void) } } + /* + * Init HYP view of VGIC + */ + err = kvm_vgic_hyp_init(); + if (err) + goto out_free_vfp; + kvm_info("Hyp mode initialized successfully\n"); return 0; out_free_vfp: |