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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=1777418714; l=1651; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=d3diFsGfXmDo2adM4qAr4NDT6FCtct/he0WqILialfA=; b=F2ouDv5e83vQrUQe+V+yDI0Ntg/VBAboJtH84k8Y287idIlHcPCLvX47Bctui/LXKS9D7iBMn 7LsbwypaN9wBM0XghTDCutRLzAiGYO5GECLGthQFpEKChNvrFoy+hi4 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-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 19CE3A0007 X-Rspam-User: X-Stat-Signature: 74ct6zqnziqs176txsjrxekck6w9r1fp X-HE-Tag: 1777418720-744562 X-HE-Meta: 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 uqwrhpsL 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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 1299935689e5b..40ac1b3769af1 100644 --- a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c @@ -99,6 +99,12 @@ 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; @@ -192,6 +198,12 @@ 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[]) { -- 2.54.0.545.g6539524ca2-goog