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| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-07-08 13:09:07 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-09-19 03:48:58 +0200 |
| commit | a98f26f183801685ef57333de4bafd4bbc692c7c (patch) | |
| tree | 8b33a5d7d13d8c2f507223b548b766ba16d559b1 /Documentation/virtual | |
| parent | arm/arm64: KVM: vgic: delay vgic allocation until init time (diff) | |
| download | linux-a98f26f183801685ef57333de4bafd4bbc692c7c.tar.xz linux-a98f26f183801685ef57333de4bafd4bbc692c7c.zip | |
arm/arm64: KVM: vgic: make number of irqs a configurable attribute
In order to make the number of interrupts configurable, use the new
fancy device management API to add KVM_DEV_ARM_VGIC_GRP_NR_IRQS as
a VGIC configurable attribute.
Userspace can now specify the exact size of the GIC (by increments
of 32 interrupts).
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/devices/arm-vgic.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/devices/arm-vgic.txt b/Documentation/virtual/kvm/devices/arm-vgic.txt index 7f4e91b1316b..df8b0c7540b6 100644 --- a/Documentation/virtual/kvm/devices/arm-vgic.txt +++ b/Documentation/virtual/kvm/devices/arm-vgic.txt @@ -71,3 +71,13 @@ Groups: Errors: -ENODEV: Getting or setting this register is not yet supported -EBUSY: One or more VCPUs are running + + KVM_DEV_ARM_VGIC_GRP_NR_IRQS + Attributes: + A value describing the number of interrupts (SGI, PPI and SPI) for + this GIC instance, ranging from 64 to 1024, in increments of 32. + + Errors: + -EINVAL: Value set is out of the expected range + -EBUSY: Value has already be set, or GIC has already been initialized + with default values. |