[PATCH v3 2/3] KVM: selftests: Expand the guest_memfd test macros to allow passing the VM

From: Sean Christopherson

Date: Wed May 27 2026 - 22:12:01 EST


Expand the gmem test macros to allow passing the VM to testcases, without
needing to plumb the VM into _every_ testcase, as the vast majority of
testcases only need the fd and size.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
tools/testing/selftests/kvm/guest_memfd_test.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c
index 832ef4dfb99f..246bb408ecc0 100644
--- a/tools/testing/selftests/kvm/guest_memfd_test.c
+++ b/tools/testing/selftests/kvm/guest_memfd_test.c
@@ -408,17 +408,26 @@ static void test_guest_memfd_flags(struct kvm_vm *vm)
}
}

-#define __gmem_test(__test, __vm, __flags, __gmem_size) \
+#define ____gmem_test(__test, __vm, __flags, __gmem_size, args...) \
do { \
int fd = vm_create_guest_memfd(__vm, __gmem_size, __flags); \
\
- test_##__test(fd, __gmem_size); \
+ test_##__test(args); \
close(fd); \
} while (0)

+#define __gmem_test(__test, __vm, __flags, __gmem_size) \
+ ____gmem_test(__test, __vm, __flags, __gmem_size, fd, __gmem_size)
+
#define gmem_test(__test, __vm, __flags) \
__gmem_test(__test, __vm, __flags, page_size * 4)

+#define __gmem_test_vm(__test, __vm, __flags, __gmem_size) \
+ ____gmem_test(__test, __vm, __flags, __gmem_size, __vm, fd, __gmem_size)
+
+#define gmem_test_vm(__test, __vm, __flags) \
+ __gmem_test_vm(__test, __vm, __flags, page_size * 4)
+
static void __test_guest_memfd(struct kvm_vm *vm, u64 flags)
{
test_create_guest_memfd_multiple(vm);
--
2.54.0.794.g4f17f83d09-goog