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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-10-27 19:30:09 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2018-01-02 10:05:46 +0100 |
| commit | b6909a659f8d5de2df36cabb1c0505d262996a24 (patch) | |
| tree | e0aa8769ddd5f3203a071b9fc90331c08d5cec73 /virt/kvm/arm/arch_timer.c | |
| parent | e40cc57bac792713ff6a1b80a1f67b54c05e5e21 (diff) | |
| download | linux-b6909a659f8d5de2df36cabb1c0505d262996a24.tar.bz2 | |
KVM: arm/arm64: Support a vgic interrupt line level sample function
The GIC sometimes need to sample the physical line of a mapped
interrupt. As we know this to be notoriously slow, provide a callback
function for devices (such as the timer) which can do this much faster
than talking to the distributor, for example by comparing a few
in-memory values. Fall back to the good old method of poking the
physical GIC if no callback is provided.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm/arm/arch_timer.c')
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 9376fe03bf2e..fb0533ed903d 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -834,7 +834,8 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu) return -EINVAL; } - ret = kvm_vgic_map_phys_irq(vcpu, host_vtimer_irq, vtimer->irq.irq); + ret = kvm_vgic_map_phys_irq(vcpu, host_vtimer_irq, vtimer->irq.irq, + NULL); if (ret) return ret; |