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AJvYcCXXNb+1Db9nmy1GvLFlO5t0+qNeSnwSU21DPIT53R++INgbDmfKrBLux5jyJG8ZN5woPm1C637doQ==@kvack.org X-Gm-Message-State: AOJu0YxFWJLck66keidQRbD593qeNn4MXnbc0AW9RPtz9+48gcj9miso SQSLltQUPw73RKnVhTUxuaKr1zP3m3Hwv1cwvkgDkTa8eDF5A/kWlaLFLhvoXnazC2SfzMPkarj zBz16eBnw3KotpasgNfH0QRHOLA== X-Google-Smtp-Source: AGHT+IEpN0MnN6PvJLRUm946buFQLbmtK0gdHmBaP5LEf3oHWoiaohC28e+OPVfB4xkdPalSl2AiLN8+JWhQOYKhmw== X-Received: from pjot19.prod.google.com ([2002:a17:90a:9513:b0:323:25d2:22db]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90a:ec8b:b0:330:3fb8:3885 with SMTP id 98e67ed59e1d1-33bcf8e6354mr5452028a91.18.1760731981888; Fri, 17 Oct 2025 13:13:01 -0700 (PDT) Date: Fri, 17 Oct 2025 13:12:01 -0700 In-Reply-To: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.51.0.858.gf9c4a03a3a-goog Message-ID: Subject: [RFC PATCH v1 20/37] KVM: selftests: guest_memfd: Test conversion flow when INIT_SHARED From: Ackerley Tng To: cgroups@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org Cc: ackerleytng@google.com, akpm@linux-foundation.org, binbin.wu@linux.intel.com, bp@alien8.de, brauner@kernel.org, chao.p.peng@intel.com, chenhuacai@kernel.org, corbet@lwn.net, dave.hansen@intel.com, dave.hansen@linux.intel.com, david@redhat.com, dmatlack@google.com, erdemaktas@google.com, fan.du@intel.com, fvdl@google.com, haibo1.xu@intel.com, hannes@cmpxchg.org, hch@infradead.org, hpa@zytor.com, hughd@google.com, ira.weiny@intel.com, isaku.yamahata@intel.com, jack@suse.cz, james.morse@arm.com, jarkko@kernel.org, jgg@ziepe.ca, jgowans@amazon.com, jhubbard@nvidia.com, jroedel@suse.de, jthoughton@google.com, jun.miao@intel.com, kai.huang@intel.com, keirf@google.com, kent.overstreet@linux.dev, liam.merwick@oracle.com, maciej.wieczor-retman@intel.com, mail@maciej.szmigiero.name, maobibo@loongson.cn, mathieu.desnoyers@efficios.com, maz@kernel.org, mhiramat@kernel.org, mhocko@kernel.org, mic@digikod.net, michael.roth@amd.com, mingo@redhat.com, mlevitsk@redhat.com, mpe@ellerman.id.au, muchun.song@linux.dev, nikunj@amd.com, nsaenz@amazon.es, oliver.upton@linux.dev, palmer@dabbelt.com, pankaj.gupta@amd.com, paul.walmsley@sifive.com, pbonzini@redhat.com, peterx@redhat.com, pgonda@google.com, prsampat@amd.com, pvorel@suse.cz, qperret@google.com, richard.weiyang@gmail.com, rick.p.edgecombe@intel.com, rientjes@google.com, rostedt@goodmis.org, roypat@amazon.co.uk, rppt@kernel.org, seanjc@google.com, shakeel.butt@linux.dev, shuah@kernel.org, steven.price@arm.com, steven.sistare@oracle.com, suzuki.poulose@arm.com, tabba@google.com, tglx@linutronix.de, thomas.lendacky@amd.com, vannapurve@google.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, vkuznets@redhat.com, wei.w.wang@intel.com, will@kernel.org, willy@infradead.org, wyihan@google.com, xiaoyao.li@intel.com, yan.y.zhao@intel.com, yilun.xu@intel.com, yuzenghui@huawei.com, zhiquan1.li@intel.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: tuafahj6rp79o8r4ec3k43c4icujthh3 X-Rspamd-Queue-Id: 31615C0005 X-Rspamd-Server: rspam09 X-HE-Tag: 1760731983-450564 X-HE-Meta: U2FsdGVkX19zsPUm9mngy7ofoDuUbgkkU31EPCbjeeJVap+AnYfePbQvCI3lXk6ICq1hSnTNgRBic4L5x+Hoz7+8bCwnlsqXdfMdHfpgiT4vdO3i+UVy0Whi2fZeyZxU2pCZUEaa+vhc3zcPolOln7c2Zr62UbT2oOChIVOAEnXOMwLvLUr7VXGkdCKd5HCF5SB82dsBDgxVkZYC7SuiJw6CC0hDTzqxrNDoppGF82QDqRvmbXpN9BMbz6+fX8tGpjOM0h5WKDOz7XLIqkZm48QVQASFWrHKDEkgVFPV5asiHCTOuCrd3eQPERkOYQpJfDypUHTHSGNhcZ4X0asasSa0a4x8bAJiAfM+KoGlhVtjq8qIas9pKvUlWGKeTnCbTS9IqZVLIbdhpINY1fMtoJMCNs2cPfoGcR2f0j0//8shvORWwOIKA/b6MH96gPOgGfMmB3OPmL52rPNBPa7fDgGwDyLz7GNwGouJxEDyc+6KDKXNvpX1hlVLcOQ4t4pauSGHwYucUSg02oy5zh2Ef0rgr+KpCFf0X64/OvlhKMIfff62S9GXTCCZYs6rcm2kkteS/+ecXYbvFZQAZfA9h9WsiQLVE0x722H/pe0UpmUss54MtrU3IHhgZuLkOXTR5GKfeXdziQm9WEm1T53ad7CGTLoLDE1mZnpevu1vnKai1x77Wz4SIvFT0OvfvTjvArOVO+peghgexXOTzVj+AoDv9bRZEP79n1mwTSxUPIkAGU69xLmo/8CWjVlsdqOckyL4jJU8RPteRc6nY5I+qlTopdauGcAkshNxH3d1sNTD1yq3mgn9AhXUPgSFU+PcdWalKqvYS3qRr6/gMzuKJcw49BxKR4APRJ9yHEcqmKlN/nDOK8saLqemoDCBU0bG4ex950hILoU0M5Al9cef/ZI9p59i9RmcKybQhLj0yhJU/Ot0GBTWVK2tvlJS02aWlNHzI5a05oboi8oTTwC tPbOzOHF 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- .../selftests/kvm/guest_memfd_conversions_test.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/testing/selftests/kvm/guest_memfd_conversions_test.c b/tools/testing/selftests/kvm/guest_memfd_conversions_test.c index e0370e92e1b24..d57e66ee11310 100644 --- a/tools/testing/selftests/kvm/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/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; @@ -194,6 +200,12 @@ 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[]) { -- 2.51.0.858.gf9c4a03a3a-goog