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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 , Baoquan He , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Jason Gunthorpe , Vlastimil Babka 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=1778185365; l=1651; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=3dJJVaO5CbDHEYuvBiKmCbp4LG4+cPBQBjzjK51vgD0=; b=T5ZAw36194pa8yvUKbqkX33Zn9CjHoCoe44GxfiKWIMI7PjSfJAIO2z5gP54gfKAkP1Hkhz08 azus6bSU4JCDbwX+JzTdUFqAq5UYd4uKvoIfc0f1Xj8DDiJOgreK6Fv 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-Queue-Id: C35B24000A X-Rspamd-Server: rspam04 X-Stat-Signature: xohi6cwnk8t6fdk85owccp8j9tr9ofkw X-HE-Tag: 1778185382-890655 X-HE-Meta: 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 788+yPqT 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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. Signed-off-by: Ackerley Tng Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson --- .../testing/selftests/kvm/x86/guest_memfd_conversions_test.c | 12 ++++++++++++ 1 file changed, 12 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 81cf13e399c83..c524457148706 100644 --- a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c @@ -95,6 +95,12 @@ 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; @@ -186,6 +192,12 @@ 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[]) { -- 2.54.0.563.g4f69b47b94-goog