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authorChristoffer Dall <c.dall@virtualopensystems.com>2013-01-23 18:18:04 (GMT)
committerMarc Zyngier <marc.zyngier@arm.com>2013-02-11 18:58:39 (GMT)
commit3401d54696f992edf036f00f46c8c399d1b75c2a (patch)
treebbb3bb02050b3b513e4b55839b553d793c1e63b9 /include/uapi
parenta96ab03917dcf4c9477d03b31e8d74779bca1074 (diff)
downloadlinux-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.h8
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