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| author |  Shannon Zhao <shannon.zhao@linaro.org>
| 2016-01-11 20:56:17 +0800 |
|---|---|---|
| committer |  Marc Zyngier <marc.zyngier@arm.com>
| 2016-02-29 18:34:21 +0000 |
| commit | f577f6c2a6a5ccabe98061f256a1e2ff468d5e93 (patch) | |
| tree | 278bd52115efb03e8d23ab4f80969a9bd1d6dab3 /Documentation/virtual/kvm/devices | |
| parent | arm64: KVM: Add a new feature bit for PMUv3 (diff) | |
| download | linux-f577f6c2a6a5ccabe98061f256a1e2ff468d5e93.tar.gz linux-f577f6c2a6a5ccabe98061f256a1e2ff468d5e93.tar.bz2 linux-f577f6c2a6a5ccabe98061f256a1e2ff468d5e93.zip | |
arm64: KVM: Introduce per-vcpu kvm device controls
In some cases it needs to get/set attributes specific to a vcpu and so
needs something else than ONE_REG.
Let's copy the KVM_DEVICE approach, and define the respective ioctls
for the vcpu file descriptor.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'Documentation/virtual/kvm/devices')
| -rw-r--r-- | Documentation/virtual/kvm/devices/vcpu.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/devices/vcpu.txt b/Documentation/virtual/kvm/devices/vcpu.txt new file mode 100644 index 000000000000..3cc59c5e44ce --- /dev/null +++ b/Documentation/virtual/kvm/devices/vcpu.txt @@ -0,0 +1,8 @@ +Generic vcpu interface +==================================== + +The virtual cpu "device" also accepts the ioctls KVM_SET_DEVICE_ATTR, +KVM_GET_DEVICE_ATTR, and KVM_HAS_DEVICE_ATTR. The interface uses the same struct +kvm_device_attr as other devices, but targets VCPU-wide settings and controls. + +The groups and attributes per virtual cpu, if any, are architecture specific. |