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Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Baoquan He , Jason Gunthorpe , John Hubbard , Peter Xu , tarunsahu@google.com, Randy Dunlap , Lorenzo Stoakes , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jason Gunthorpe , Fuad Tabba , Vlastimil Babka , Baoquan He Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, Ackerley Tng X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788135916; l=1820; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=xYw2zR0sil2DMulPFsHrm+Fn54xO5rySrIonHJxlHdY=; b=biTv8DxdIPMmqKcaPDRSer+ZFsb/kdS9KwcKlME5qJy2Ary24lqI1vc+9urmZBiMg6+4afZzv nQji3gwfMF3DpmlvEhLSIM3IyNefcJ6PMRkzuv4bmBVy8WRbZwgmZPS X-Developer-Key: i=ackerleytng@google.com; a=ed25519; pk=sAZDYXdm6Iz8FHitpHeFlCMXwabodTm7p8/3/8xUxuU= X-Endpoint-Received: by B4 Relay for ackerleytng@google.com/20260225 with auth_id=649 X-Original-From: Ackerley Tng Reply-To: ackerleytng@google.com X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 39B21A0002 X-Stat-Signature: crkynueiigs3tyewokomxbco3131bwgz X-HE-Tag: 1788135937-407532 X-HE-Meta: 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 URb/RpWL 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Ackerley Tng Add a test case to verify that conversions between private and shared memory work correctly when the memory is initially created as shared. Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson Reviewed-by: Fuad Tabba Tested-by: Shivank Garg Signed-off-by: Ackerley Tng --- .../selftests/kvm/x86/guest_memfd_conversions_test.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c index 77f95d49349ce..4c20d3d8e9349 100644 --- a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c @@ -97,6 +97,12 @@ static void __gmem_conversions_##test(test_data_t *t, int nr_pages) \ #define GMEM_CONVERSION_TEST_INIT_PRIVATE(test) \ __GMEM_CONVERSION_TEST_INIT_PRIVATE(test, 1) +#define __GMEM_CONVERSION_TEST_INIT_SHARED(test, __nr_pages) \ + GMEM_CONVERSION_TEST(test, __nr_pages, GUEST_MEMFD_FLAG_INIT_SHARED) + +#define GMEM_CONVERSION_TEST_INIT_SHARED(test) \ + __GMEM_CONVERSION_TEST_INIT_SHARED(test, 1) + struct guest_check_data { void *mem; char expected_val; @@ -188,6 +194,13 @@ GMEM_CONVERSION_TEST_INIT_PRIVATE(init_private) test_convert_to_private(t, 0, 'C', 'E'); } +GMEM_CONVERSION_TEST_INIT_SHARED(init_shared) +{ + test_shared(t, 0, 0, 'A', 'B'); + test_convert_to_private(t, 0, 'B', 'C'); + test_convert_to_shared(t, 0, 'C', 'D', 'E'); +} + int main(int argc, char *argv[]) { TEST_REQUIRE(kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_SW_PROTECTED_VM)); -- 2.55.0.897.gb25b4bd76c-goog