diff options
Diffstat (limited to 'tools/testing/selftests/kvm/include/ucall_common.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/ucall_common.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/tools/testing/selftests/kvm/include/ucall_common.h b/tools/testing/selftests/kvm/include/ucall_common.h index ee79d180e07e..1a6aaef5ccae 100644 --- a/tools/testing/selftests/kvm/include/ucall_common.h +++ b/tools/testing/selftests/kvm/include/ucall_common.h @@ -22,12 +22,26 @@ enum { struct ucall { uint64_t cmd; uint64_t args[UCALL_MAX_ARGS]; + + /* Host virtual address of this struct. */ + struct ucall *hva; }; -void ucall_init(struct kvm_vm *vm, void *arg); -void ucall_uninit(struct kvm_vm *vm); +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa); +void ucall_arch_do_ucall(vm_vaddr_t uc); +void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu); + void ucall(uint64_t cmd, int nargs, ...); uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc); +void ucall_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa); + +/* + * Perform userspace call without any associated data. This bare call avoids + * allocating a ucall struct, which can be useful if the atomic operations in + * the full ucall() are problematic and/or unwanted. Note, this will come out + * as UCALL_NONE on the backend. + */ +#define GUEST_UCALL_NONE() ucall_arch_do_ucall((vm_vaddr_t)NULL) #define GUEST_SYNC_ARGS(stage, arg1, arg2, arg3, arg4) \ ucall(UCALL_SYNC, 6, "hello", stage, arg1, arg2, arg3, arg4) |