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[173.79.60.52]) by smtp.gmail.com with ESMTPSA id af79cd13be357-9395f18801asm299300585a.16.2026.09.02.12.47.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Sep 2026 12:47:06 -0700 (PDT) From: Gregory Price To: linux-mm@kvack.org Cc: kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, pbonzini@redhat.com, seanjc@google.com, akpm@linux-foundation.org, david@kernel.org, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, shuah@kernel.org Subject: [PATCH 4/5] selftests: KVM: guest_memfd: let the gmem_test() harness bind a node Date: Wed, 2 Sep 2026 15:46:56 -0400 Message-ID: <20260902194657.79075-5-gourry@gourry.net> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260902194657.79075-1-gourry@gourry.net> References: <20260902194657.79075-1-gourry@gourry.net> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To test GUEST_MEMFD_FLAG_BIND_NODE - extend create_guest_memfd() to accept a node. Ignore the node argument if the BIND_NODE flag is not provided. Signed-off-by: Gregory Price Assisted-by: Claude:claude-opus-5 --- .../testing/selftests/kvm/guest_memfd_test.c | 50 ++++++++++++++++--- 1 file changed, 42 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c index 2233d871a38f4..1818e0fea5690 100644 --- a/tools/testing/selftests/kvm/guest_memfd_test.c +++ b/tools/testing/selftests/kvm/guest_memfd_test.c @@ -25,6 +25,31 @@ static size_t page_size; +static int __create_guest_memfd_node(struct kvm_vm *vm, u64 size, u64 flags, + u32 node, u32 pad) +{ + struct kvm_create_guest_memfd guest_memfd = { + .size = size, + .flags = flags, + .node = node, + .pad = pad, + }; + + return __vm_ioctl(vm, KVM_CREATE_GUEST_MEMFD, &guest_memfd); +} + +static int create_guest_memfd(struct kvm_vm *vm, u64 size, u64 flags, u32 node) +{ + int fd; + + if (!(flags & GUEST_MEMFD_FLAG_BIND_NODE)) + return vm_create_guest_memfd(vm, size, flags); + + fd = __create_guest_memfd_node(vm, size, flags, node, 0); + TEST_ASSERT(fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_GUEST_MEMFD, fd)); + return fd; +} + static void test_file_read_write(int fd, size_t total_size) { char buf[64]; @@ -418,26 +443,35 @@ static void test_guest_memfd_flags(struct kvm_vm *vm) } } -#define ____gmem_test(__test, __vm, __flags, __gmem_size, args...) \ -do { \ - int fd = vm_create_guest_memfd(__vm, __gmem_size, __flags); \ - \ - test_##__test(args); \ - close(fd); \ +#define ____gmem_test(__test, __vm, __flags, __gmem_size, __node, args...) \ +do { \ + int fd = create_guest_memfd(__vm, __gmem_size, __flags, __node); \ + \ + 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) + ____gmem_test(__test, __vm, __flags, __gmem_size, 0, 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) + ____gmem_test(__test, __vm, __flags, __gmem_size, 0, \ + __vm, fd, __gmem_size) #define gmem_test_vm(__test, __vm, __flags) \ __gmem_test_vm(__test, __vm, __flags, page_size * 4) +#define __gmem_test_node(__test, __vm, __flags, __gmem_size, __node) \ + ____gmem_test(__test, __vm, \ + (__flags) | GUEST_MEMFD_FLAG_BIND_NODE, \ + __gmem_size, __node, fd, __gmem_size, __node) + +#define gmem_test_node(__test, __vm, __flags, __node) \ + __gmem_test_node(__test, __vm, __flags, page_size * 4, __node) + static void __test_guest_memfd(struct kvm_vm *vm, u64 flags) { test_create_guest_memfd_multiple(vm); -- 2.53.0-Meta