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authorAlexandru Elisei <alexandru.elisei@arm.com>2020-09-24 15:37:30 +0300
committerMarc Zyngier <maz@kernel.org>2020-09-29 16:26:38 +0300
commitaf130d0adc8e48c73030c0d71a59ce1f7809a8fa (patch)
tree3c9035d684fe79dbf318475356aaae2a318c6730 /Documentation/virt
parent8be86a5eec046cb8bd06b4393d373cd433a32cba (diff)
downloadlinux-af130d0adc8e48c73030c0d71a59ce1f7809a8fa.tar.xz
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 'Documentation/virt')
-rw-r--r--Documentation/virt/kvm/devices/vcpu.rst2
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