diff options
| author | Marc Zyngier <maz@kernel.org> | 2023-01-03 09:50:21 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-01-12 21:13:27 +0000 |
| commit | 43c5c868bddcec744396f4e334d3ebfe22dedeaf (patch) | |
| tree | 577808b206d67a55875bf7ced4751e7b72eef74c /arch/arm64/kvm/vgic | |
| parent | b7bfaa761d760e72a969d116517eaa12e404c262 (diff) | |
KVM: arm64: vgic: Allow registration of a non-maskable maintenance interrupt
Our Apple M1/M2 friends do have a per-CPU maintenance interrupt,
but no mask to make use of it in the standard Linux framework.
Given that KVM directly drives the *source* of the interrupt and
leaves the GIC interrupt always enabled, there is no harm in tolerating
such a setup. It will become useful once we enable NV on M2 HW.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230103095022.3230946-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm/vgic')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic-init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c index f6d4f4052555..e61d9ca01768 100644 --- a/arch/arm64/kvm/vgic/vgic-init.c +++ b/arch/arm64/kvm/vgic/vgic-init.c @@ -572,7 +572,7 @@ int kvm_vgic_hyp_init(void) if (ret) return ret; - if (!has_mask) + if (!has_mask && !kvm_vgic_global_state.maint_irq) return 0; ret = request_percpu_irq(kvm_vgic_global_state.maint_irq, |