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| author | Alexandru Elisei <alexandru.elisei@arm.com> | 2020-09-24 14:37:30 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-09-29 15:26:38 +0200 |
| commit | af130d0adc8e48c73030c0d71a59ce1f7809a8fa (patch) | |
| tree | 3c9035d684fe79dbf318475356aaae2a318c6730 /Documentation/virt/kvm/devices/vcpu.rst | |
| parent | KVM: arm64: Document PMU filtering API (diff) | |
| download | linux-af130d0adc8e48c73030c0d71a59ce1f7809a8fa.tar.xz linux-af130d0adc8e48c73030c0d71a59ce1f7809a8fa.zip | |
KVM: arm64: Add undocumented return values for PMU device control group
KVM_ARM_VCPU_PMU_V3_IRQ returns -EFAULT if get_user() fails when reading
the interrupt number from kvm_device_attr.addr.
KVM_ARM_VCPU_PMU_V3_INIT returns the error value from kvm_vgic_set_owner().
kvm_arm_pmu_v3_init() checks that the vgic has been initialized and the
interrupt number is valid, but kvm_vgic_set_owner() can still return the
error code -EEXIST if another device has already claimed the interrupt.
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Link: https://lore.kernel.org/r/20200924123731.268177-2-alexandru.elisei@arm.com
Diffstat (limited to '')
| -rw-r--r-- | Documentation/virt/kvm/devices/vcpu.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/devices/vcpu.rst b/Documentation/virt/kvm/devices/vcpu.rst index c8b707afca6e..1da576a4b767 100644 --- a/Documentation/virt/kvm/devices/vcpu.rst +++ b/Documentation/virt/kvm/devices/vcpu.rst @@ -25,6 +25,7 @@ Returns: ======= ======================================================== -EBUSY The PMU overflow interrupt is already set + -EFAULT Error reading interrupt number -ENXIO The overflow interrupt not set when attempting to get it -ENODEV PMUv3 not supported -EINVAL Invalid PMU overflow interrupt number supplied or @@ -45,6 +46,7 @@ all vcpus, while as an SPI it must be a separate number per vcpu. Returns: ======= ====================================================== + -EEXIST Interrupt number already used -ENODEV PMUv3 not supported or GIC not initialized -ENXIO PMUv3 not properly configured or in-kernel irqchip not configured as required prior to calling this attribute |