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| author | Christoffer Dall <c.dall@virtualopensystems.com> | 2013-01-23 22:18:04 +0400 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-02-11 22:58:39 +0400 |
| commit | 3401d54696f992edf036f00f46c8c399d1b75c2a (patch) | |
| tree | bbb3bb02050b3b513e4b55839b553d793c1e63b9 /arch/arm/include/uapi | |
| parent | a96ab03917dcf4c9477d03b31e8d74779bca1074 (diff) | |
| download | linux-3401d54696f992edf036f00f46c8c399d1b75c2a.tar.xz | |
KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR ioctl
On ARM some bits are specific to the model being emulated for the guest and
user space needs a way to tell the kernel about those bits. An example is mmio
device base addresses, where KVM must know the base address for a given device
to properly emulate mmio accesses within a certain address range or directly
map a device with virtualiation extensions into the guest address space.
We make this API ARM-specific as we haven't yet reached a consensus for a
generic API for all KVM architectures that will allow us to do something like
this.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/include/uapi')
| -rw-r--r-- | arch/arm/include/uapi/asm/kvm.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/uapi/asm/kvm.h b/arch/arm/include/uapi/asm/kvm.h index 3303ff5adbf3..346ac3f4a2b8 100644 --- a/arch/arm/include/uapi/asm/kvm.h +++ b/arch/arm/include/uapi/asm/kvm.h @@ -65,6 +65,19 @@ struct kvm_regs { #define KVM_ARM_TARGET_CORTEX_A15 0 #define KVM_ARM_NUM_TARGETS 1 +/* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */ +#define KVM_ARM_DEVICE_TYPE_SHIFT 0 +#define KVM_ARM_DEVICE_TYPE_MASK (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT) +#define KVM_ARM_DEVICE_ID_SHIFT 16 +#define KVM_ARM_DEVICE_ID_MASK (0xffff << KVM_ARM_DEVICE_ID_SHIFT) + +/* Supported device IDs */ +#define KVM_ARM_DEVICE_VGIC_V2 0 + +/* Supported VGIC address types */ +#define KVM_VGIC_V2_ADDR_TYPE_DIST 0 +#define KVM_VGIC_V2_ADDR_TYPE_CPU 1 + #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ struct kvm_vcpu_init { |