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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260507-gmem-inplace-conversion-v6-3-91ab5a8b19a4@google.com> References: <20260507-gmem-inplace-conversion-v6-0-91ab5a8b19a4@google.com> In-Reply-To: <20260507-gmem-inplace-conversion-v6-0-91ab5a8b19a4@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, 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 , 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=1791; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=C7P/mxhz9DAqQzB6CxgEM8gcled6eZv2sqolJ/KKivU=; b=wcaEBQ3B5MQoFrzAYR19BhunOB2ZM5f9MFDFbzdWLENdn3X2Ol7qimhW1yhar7XbK7ngBzCyU JNRpOB+MkstAkaoxRAcGVZDb7Skc4II5pSOQ/pMcs2oHEeEEipmwlIW 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-Server: rspam10 X-Rspamd-Queue-Id: C857640006 X-Stat-Signature: jth45djfi97eisd9rzoexb8wb4mipm8i X-HE-Tag: 1778185370-543401 X-HE-Meta: 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 9DQDooBT pEm2RvteDzZuErrSsWxsk2pCkFBiH3HRSwgl583nAM0nXSkn08eKAEFsYCV2pjL8n6EWI3xSO5FqNPZTlud0/H/F8yon4AvP4anvuRTFfAFccODdYf16zOC3wTRqZ4joCRzCrz1lBpRiybw70eEyKGNG7ndSs5CirrwqPHs3vefC9NHkbZFR+ySxQ55uyVqY5tEGem9GaxEqGKcdm+eWonwO2E6azl5CWmhtnHRUNa+076FvripxqfFbzWFFfHzNrFppDpvrx11a5hahkXdkvV9Yd6TcpRFBv2wFfdiBvHt6PD3PUazkvSKERyDK+TsdfG4+L+IBuB3EyH4VW2mkttFCQeaUWWtwnAlgnW4seWINCzVJxQ1zvaTK9Gm9fDa/hSa+WIO1Hd4bgoMpx42852VxkMijCq7wOUv/3dk/likVrhSc= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Sean Christopherson Explicitly guard reporting support for KVM_MEMORY_ATTRIBUTE_PRIVATE based on kvm_arch_has_private_mem being #defined in anticipation of decoupling kvm_supported_mem_attributes() from CONFIG_KVM_VM_MEMORY_ATTRIBUTES. guest_memfd support for memory attributes will be unconditional to avoid yet more macros (all architectures that support guest_memfd are expected to use per-gmem attributes at some point), at which point enumerating support KVM_MEMORY_ATTRIBUTE_PRIVATE based solely on memory attributes being supported _somewhere_ would result in KVM over-reporting support on arm64. Signed-off-by: Sean Christopherson Signed-off-by: Ackerley Tng --- include/linux/kvm_host.h | 2 +- virt/kvm/kvm_main.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 7b9faa3545300..7d079f9701346 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -722,7 +722,7 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) } #endif -#ifndef CONFIG_KVM_VM_MEMORY_ATTRIBUTES +#ifndef kvm_arch_has_private_mem static inline bool kvm_arch_has_private_mem(struct kvm *kvm) { return false; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 306153abbafa5..abb9cfa3eb04d 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2421,8 +2421,10 @@ static int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, #ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES static u64 kvm_supported_mem_attributes(struct kvm *kvm) { +#ifdef kvm_arch_has_private_mem if (!kvm || kvm_arch_has_private_mem(kvm)) return KVM_MEMORY_ATTRIBUTE_PRIVATE; +#endif return 0; } -- 2.54.0.563.g4f69b47b94-goog