diff options
| author | Christoffer Dall <c.dall@virtualopensystems.com> | 2013-01-23 18:18:04 (GMT) |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-02-11 18:58:39 (GMT) |
| commit | 3401d54696f992edf036f00f46c8c399d1b75c2a (patch) | |
| tree | bbb3bb02050b3b513e4b55839b553d793c1e63b9 /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 'include/uapi')
| -rw-r--r-- | include/uapi/linux/kvm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 7f2360a..c70577c 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -637,6 +637,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_PPC_BOOKE_WATCHDOG 83 #define KVM_CAP_PPC_HTAB_FD 84 #define KVM_CAP_ARM_PSCI 87 +#define KVM_CAP_ARM_SET_DEVICE_ADDR 88 #ifdef KVM_CAP_IRQ_ROUTING @@ -784,6 +785,11 @@ struct kvm_msi { __u8 pad[16]; }; +struct kvm_arm_device_addr { + __u64 id; + __u64 addr; +}; + /* * ioctls for VM fds */ @@ -869,6 +875,8 @@ struct kvm_s390_ucas_mapping { #define KVM_ALLOCATE_RMA _IOR(KVMIO, 0xa9, struct kvm_allocate_rma) /* Available with KVM_CAP_PPC_HTAB_FD */ #define KVM_PPC_GET_HTAB_FD _IOW(KVMIO, 0xaa, struct kvm_get_htab_fd) +/* Available with KVM_CAP_ARM_SET_DEVICE_ADDR */ +#define KVM_ARM_SET_DEVICE_ADDR _IOW(KVMIO, 0xab, struct kvm_arm_device_addr) /* * ioctls for vcpu fds |