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| -rw-r--r-- | Documentation/virt/kvm/devices/vcpu.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/virt/kvm/devices/vcpu.rst b/Documentation/virt/kvm/devices/vcpu.rst index 5e3805820010..66e714f2fcfa 100644 --- a/Documentation/virt/kvm/devices/vcpu.rst +++ b/Documentation/virt/kvm/devices/vcpu.rst @@ -37,8 +37,11 @@ Returns: A value describing the PMUv3 (Performance Monitor Unit v3) overflow interrupt number for this vcpu. This interrupt could be a PPI or SPI, but the interrupt type must be same for each vcpu. As a PPI, the interrupt number is the same for -all vcpus, while as an SPI it must be a separate number per vcpu. For -GICv5-based guests, the architected PPI (23) must be used. +all vcpus, while as an SPI it must be a separate number per vcpu. + +For GICv5-based guests, the architected PPI (23) must be used, and must be +communicated as the full GICv5-style Interrupt ID, i.e., 0x20000017. This ioctl +can be omitted altogether for a GICv5-based guest. 1.2 ATTRIBUTE: KVM_ARM_VCPU_PMU_V3_INIT --------------------------------------- |