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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260910-gmem-inplace-conversion-v13-27-dd6fbf94f4e1@google.com> References: <20260910-gmem-inplace-conversion-v13-0-dd6fbf94f4e1@google.com> In-Reply-To: <20260910-gmem-inplace-conversion-v13-0-dd6fbf94f4e1@google.com> To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com, brauner@kernel.org, chao.p.peng@linux.intel.com, david@kernel.org, jmattson@google.com, jthoughton@google.com, michael.roth@amd.com, oupton@kernel.org, pankaj.gupta@amd.com, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, shivankg@amd.com, steven.price@arm.com, willy@infradead.org, wyihan@google.com, yan.y.zhao@intel.com, forkloop@google.com, pratyush@kernel.org, suzuki.poulose@arm.com, aneesh.kumar@kernel.org, liam@infradead.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. 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=2381; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=A2BGJl0NqlKbP8kqzcvuxy5LjiQiBIoRQH4XzKOaoYY=; b=uA13NRN/W2IUSoKc7303OoTK37SUcvedwrTz3e42gu1e8H3uBq7WyP5WSTpHG4mjjBp+/aZMt p3q2P07KW8cC6NLxWdSgfVBKj11vNhoMcnqd4SOfJiChTtr0SYE5kDm 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: rspam11 X-Rspamd-Queue-Id: C48F014000B X-Stat-Signature: yc3u8ariqgd99anw84yfo1kr5s8inxsf X-Rspam-User: X-HE-Tag: 1789084548-591361 X-HE-Meta: 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 5rI9NgsG ec5LG9Ud8Igsfcz6jSewkegi4L2uX4dh5Zgxh6A6mXB2UP1FxkDrU/hvF+zFP7kEd6cQSeIwUu6yk54ZQsLVmXnCINHFJsh0Y3GeyGqrtwn88yLHjBN8rQR4eazvpckGS/tcWRTruS8j+cKTmOaRdSebxNoBRy6jlpPyKjZFp0j9ny+CREJKwlMx0NWsvFzCx51d7XLTmrzUOemIl/L+XgRTJSRjEpN1ZjoF08AeTuntRSAkS3RmbRE93pREw+4geFkEQgJnZ2Z7l1s3Zi2kTQ/KoAlTCxkAM0BStnS++OFUns7n29aQ5gyhiDJ1ITmlPQTuy14l0hyhQbYwfvJcJnNuxS8Ak2ecvQxLlf34+JBofJfdPJ7e5XuREukzlGB5oWK/aZYsQDahgKLUFbdOkxW94WSMIgoDfTw1Al6uz+WpVWiPx7lpJ3TKgB7udcU6H+piOyq8PzzUrvGlsDujEindKz/ZYUCPSJNh0 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Sean Christopherson Add a global variable, kvm_has_gmem_attributes, to make the result of checking for KVM_CAP_GUEST_MEMFD_MEMORY_ATTRIBUTES available to all tests. kvm_has_gmem_attributes is true if guest_memfd tracks memory attributes, as opposed to VM-level tracking. This global variable is synced to the guest for testing convenience, to avoid introducing subtle bugs when host/guest state is desynced. Signed-off-by: Sean Christopherson Signed-off-by: Ackerley Tng Tested-by: Shivank Garg Reviewed-by: Fuad Tabba --- tools/testing/selftests/kvm/include/test_util.h | 2 ++ tools/testing/selftests/kvm/lib/kvm_util.c | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h index a6a3e16578959..d5825211f2727 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -116,6 +116,8 @@ struct kvm_random_state { extern u32 kvm_random_seed; extern struct kvm_random_state kvm_rng; +extern bool kvm_has_gmem_attributes; + struct kvm_random_state new_kvm_random_state(u32 seed); u32 kvm_random_u32(struct kvm_random_state *state); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 08d0bbcd421ea..cd468b2bb8343 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -32,6 +32,8 @@ static void kvm_seed_rng(u32 seed) kvm_rng = new_kvm_random_state(kvm_random_seed); } +bool kvm_has_gmem_attributes; + static size_t vcpu_mmap_sz(void); int __open_path_or_exit(const char *path, int flags, const char *enoent_help) @@ -527,6 +529,7 @@ struct kvm_vm *__vm_create(struct vm_shape shape, u32 nr_runnable_vcpus, kvm_seed_rng(kvm_random_seed); sync_global_to_guest(vm, kvm_rng); + sync_global_to_guest(vm, kvm_has_gmem_attributes); kvm_arch_vm_post_create(vm, nr_runnable_vcpus); @@ -2311,6 +2314,8 @@ void __attribute((constructor)) kvm_selftest_init(void) srandom(time(0)); kvm_seed_rng(random()); + kvm_has_gmem_attributes = kvm_has_cap(KVM_CAP_GUEST_MEMFD_MEMORY_ATTRIBUTES); + kvm_selftest_arch_init(); } -- 2.55.0.1007.g17ff1f9808-goog