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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260428-gmem-inplace-conversion-v5-32-d8608ccfca22@google.com> References: <20260428-gmem-inplace-conversion-v5-0-d8608ccfca22@google.com> In-Reply-To: <20260428-gmem-inplace-conversion-v5-0-d8608ccfca22@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, ira.weiny@intel.com, 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, tabba@google.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, 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 , 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=2393; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=2uZTwd9pQETPqyenjKlFdMpmnrOuCmY+atU10nYWJ9E=; b=CMaZi1qcTo34olAF8ct+1XgvZcaQuemV2QFt9hlP3ghfeKhnQ//+kuPM3BpNu42zCM4/LlqwF dkfI+RbwmAPBA3KVsmD38J7HNp21dzxElcdQd2x9IXroc7aoac8NxaE 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: 1BC5F20014 X-Rspamd-Server: rspam06 X-Stat-Signature: xr816znw5m5y91ytybgdt1hrua7zfsip X-HE-Tag: 1777418733-661106 X-HE-Meta: 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 L37EYp0F y7ipBOzrBrtzaeVgdpcK9RdZNfoh2kESe8yASSb+U0pSmWorBbMHIw60OMI2VhIvYP99kklg+jWcNdbNu1G4IJ1oTmPTwxs6bqgUa6FPJC1rEGVowQr/tMu5Ra74hDFnXXGPDOFcVEwBluKjlH/tNCnWdBOCukr15+neWGdBz5/McO8ljhQMTpUEm2NytGJ3yPE99ZuQcQRBa121S93l8jMQXxPXHrR7VHWWVZpuMCe5qTwlBVB9kb9aYjgvb5waAM1gTB6gg++bxikx/aZMSHEqr+I6he56BAya4FMylMuje6jLbEwtVxKglZ9BnylseSQo6sD1UNTNtCG7pLcOvHRv73OV0ZIgwzdYRXVlGJLCq2+KWfGky8tDMsUYpcSJDbKXD+KqCM7qw5X76+9UBm6zc+hrgr94Al1eiCK+jJDDNpQpKKCoUDJnP7Jt4uxIVuhZE0T/97+tKbivaJMOLyFK0DA== 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 --- 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 d9b433b834f1b..c280c3233f502 100644 --- a/tools/testing/selftests/kvm/include/test_util.h +++ b/tools/testing/selftests/kvm/include/test_util.h @@ -115,6 +115,8 @@ struct guest_random_state { extern u32 guest_random_seed; extern struct guest_random_state guest_rng; +extern bool kvm_has_gmem_attributes; + struct guest_random_state new_guest_random_state(u32 seed); u32 guest_random_u32(struct guest_random_state *state); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index ff301e7c22b2f..5e34593ad79c4 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -24,6 +24,8 @@ u32 guest_random_seed; struct guest_random_state guest_rng; static u32 last_guest_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) @@ -521,6 +523,7 @@ struct kvm_vm *__vm_create(struct vm_shape shape, u32 nr_runnable_vcpus, } guest_rng = new_guest_random_state(guest_random_seed); sync_global_to_guest(vm, guest_rng); + sync_global_to_guest(vm, kvm_has_gmem_attributes); kvm_arch_vm_post_create(vm, nr_runnable_vcpus); @@ -2287,6 +2290,8 @@ void __attribute((constructor)) kvm_selftest_init(void) guest_random_seed = last_guest_seed = random(); pr_info("Random seed: 0x%x\n", guest_random_seed); + kvm_has_gmem_attributes = kvm_has_cap(KVM_CAP_GUEST_MEMFD_MEMORY_ATTRIBUTES); + kvm_selftest_arch_init(); } -- 2.54.0.545.g6539524ca2-goog