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KVM: selftests: Add KVM_SET_USER_MEMORY_REGION2 helper

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Add helpers to invoke KVM_SET_USER_MEMORY_REGION2 directly so that tests
can validate of features that are unique to "version 2" of "set user
memory region", e.g. do negative testing on gmem_fd and gmem_offset.

Provide a raw version as well as an assert-success version to reduce
the amount of boilerplate code need for basic usage.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Ackerley Tng <ackerleytng@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20231027182217.3615211-33-seanjc@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Chao Peng 2023-10-27 11:22:14 -07:00 committed by Paolo Bonzini
parent 43f623f350
commit e6f4f345b2
2 changed files with 36 additions and 0 deletions
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7
tools/testing/selftests/kvm/include/kvm_util_base.h
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@ -522,6 +522,13 @@ void vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva);
int __vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva);
void vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva,
uint32_t guest_memfd, uint64_t guest_memfd_offset);
int __vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva,
uint32_t guest_memfd, uint64_t guest_memfd_offset);
void vm_userspace_mem_region_add(struct kvm_vm *vm,
enum vm_mem_backing_src_type src_type,
uint64_t guest_paddr, uint32_t slot, uint64_t npages,

29
tools/testing/selftests/kvm/lib/kvm_util.c
View File

@ -873,6 +873,35 @@ void vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
errno, strerror(errno));
}
int __vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva,
uint32_t guest_memfd, uint64_t guest_memfd_offset)
{
struct kvm_userspace_memory_region2 region = {
.slot = slot,
.flags = flags,
.guest_phys_addr = gpa,
.memory_size = size,
.userspace_addr = (uintptr_t)hva,
.guest_memfd = guest_memfd,
.guest_memfd_offset = guest_memfd_offset,
};
return ioctl(vm->fd, KVM_SET_USER_MEMORY_REGION2, &region);
}
void vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags,
uint64_t gpa, uint64_t size, void *hva,
uint32_t guest_memfd, uint64_t guest_memfd_offset)
{
int ret = __vm_set_user_memory_region2(vm, slot, flags, gpa, size, hva,
guest_memfd, guest_memfd_offset);
TEST_ASSERT(!ret, "KVM_SET_USER_MEMORY_REGION2 failed, errno = %d (%s)",
errno, strerror(errno));
}
/* FIXME: This thing needs to be ripped apart and rewritten. */
void vm_mem_add(struct kvm_vm *vm, enum vm_mem_backing_src_type src_type,
uint64_t guest_paddr, uint32_t slot, uint64_t npages,