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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=1789084533; l=1821; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=ooNMDyQXwRI+wUeKneWTHpK53DEY6c8VVbqQXQcIHAk=; b=TVt8xCsFDZA9FFlAE9ly2eaVCA1I1fkxP5nD/f7o6J6AXps/b0sL+qQ/qDbIfvY0W8EeWwIHj 1UEeF6Q73YxBtbPX/cKPX+r3WgN/tsiwKxEIXy7vbtb1r2xC1VuU/lX 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: rspam08 X-Rspamd-Queue-Id: EB419180007 X-Stat-Signature: mt13s41snf1nbxhrpa3sti944yfnyw7r X-HE-Tag: 1789084549-138766 X-HE-Meta: U2FsdGVkX1/z9CqWzdrhKCpu+UJz9giaJpX3XilJg3b2n/LGMMjsofCSTCILaPyY5Y0AH4QnM54acZlp26w2tAvHFaYDkERrNkbXBOfm36Smw8zVA3KUppoLqZNYQSyUoBpBAiBSa6ISeHfkTJjnZ0kdqGPWuf9rGxODGEcjR01VvbnYiqy5SSy2Yz8WpgLkPh+fPW4eVMhaemOWoSiXB5ebHUUCOSELwmXl0DV+vUsHwQ1z6o/AwBhZdbaFZkXngCgTrxwecAT5yWkvX7aaY4R2Rag1CDvNN/QD0LmIs/yAhWu9uAGrFTzqEiUh70L2y0NutLgUXTI99fLBX6Hc4SysexP4NaF8dflycCyPEdQvVV+AIpFYfpj7aWmMAW4hAfxQTdBpligUem4mE9W7Cwa3WqYayaHn2pUUqHiEDshK7LTv+ImggCo21/A3hkCu6NrXi6X6FPj2BqiGmRb02aD+jxbVxF9BACUUjUk/oI4+shbhNjl++uAXPDB+9oHIqU7WmQEeYiZYZQ3bx5nJ0mxBlhly60lumSp6a3z0fZwpAvv6kZNmSozzHkQmqpF9WRPGP20L5dC6l8G/Ycv7kqhOmxU/2QoK1KHP3Pr2GzrQEBwMV3yVubuxX5iWsOS7+4ABZQdayBVSWoJa4WXQQAI+dBbrsh7gfywjoZeracFNOOp9Jd4P5gwVkhx5diLd+1DUwmrqNO2kre3M08iREsBYdY7iJdaPPjW1qVxaWZ1Wn+R25CLMIvl6hVOptjUs2OeKbZ7qZTpQTMMkJXXPLWciwJiBT4bqh5lOPjF7c0hgdBNVF06abU0aKHWChKurbc3PkB+nC9Tg0j11yYSUrQ/vxqfv1VyInU7CzuyW56CNOX31XvzdNW8kMKZGWP4ntQhEK7xpxbTooZmDqf05xcmgHSTOUcmw4vG4pBZhfDtExCwhjYhM0OurO0wgT0tgk4CPqCiEPBJvejm+YPg 7Vuvcb8l 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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 Signed-off-by: Ackerley Tng Tested-by: Shivank Garg Reviewed-by: Fuad Tabba --- .../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)); -- 2.55.0.1007.g17ff1f9808-goog