[v4,11/12] KVM: selftests: set KVM_GMEM_NO_DIRECT_MAP in mem conversion tests

Commit Message

Patrick Roy Feb. 21, 2025, 4:07 p.m. UTC

Cover the scenario that the guest can fault in and write gmem-backed
guest memory even if its direct map removed.

Signed-off-by: Patrick Roy <[e-mail]>
---
 .../selftests/kvm/x86/private_mem_conversions_test.c       | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Patch

diff --git a/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c b/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c
index 82a8d88b5338..dfc78781e93b 100644
--- a/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c
+++ b/tools/testing/selftests/kvm/x86/private_mem_conversions_test.c
@@ -367,7 +367,7 @@  static void *__test_mem_conversions(void *__vcpu)
 }
 
 static void test_mem_conversions(enum vm_mem_backing_src_type src_type, uint32_t nr_vcpus,
-				 uint32_t nr_memslots)
+				 uint32_t nr_memslots, uint64_t gmem_flags)
 {
 	/*
 	 * Allocate enough memory so that each vCPU's chunk of memory can be
@@ -394,7 +394,7 @@  static void test_mem_conversions(enum vm_mem_backing_src_type src_type, uint32_t
 
 	vm_enable_cap(vm, KVM_CAP_EXIT_HYPERCALL, (1 << KVM_HC_MAP_GPA_RANGE));
 
-	memfd = vm_create_guest_memfd(vm, memfd_size, 0);
+	memfd = vm_create_guest_memfd(vm, memfd_size, gmem_flags);
 
 	for (i = 0; i < nr_memslots; i++)
 		vm_mem_add(vm, src_type, BASE_DATA_GPA + slot_size * i,
@@ -477,7 +477,8 @@  int main(int argc, char *argv[])
 		}
 	}
 
-	test_mem_conversions(src_type, nr_vcpus, nr_memslots);
+	test_mem_conversions(src_type, nr_vcpus, nr_memslots, 0);
+	test_mem_conversions(src_type, nr_vcpus, nr_memslots, KVM_GMEM_NO_DIRECT_MAP);
 
 	return 0;
 }