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[2003:d8:2f3f:f800:c101:5c9f:3bc9:3d08]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-410f2007372sm1581231f8f.16.2025.09.25.03.26.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Sep 2025 03:26:55 -0700 (PDT) Message-ID: <67101d20-8daa-46e6-8df0-801aa70b102d@redhat.com> Date: Thu, 25 Sep 2025 12:26:52 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 04/12] KVM: guest_memfd: Add stub for kvm_arch_gmem_invalidate To: "Roy, Patrick" Cc: "pbonzini@redhat.com" , "corbet@lwn.net" , "maz@kernel.org" , "oliver.upton@linux.dev" , "joey.gouly@arm.com" , "suzuki.poulose@arm.com" , "yuzenghui@huawei.com" , "catalin.marinas@arm.com" , "will@kernel.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "luto@kernel.org" , "peterz@infradead.org" , "willy@infradead.org" , "akpm@linux-foundation.org" , "lorenzo.stoakes@oracle.com" , "Liam.Howlett@oracle.com" , "vbabka@suse.cz" , "rppt@kernel.org" , "surenb@google.com" , "mhocko@suse.com" , "song@kernel.org" , "jolsa@kernel.org" , "ast@kernel.org" , "daniel@iogearbox.net" , "andrii@kernel.org" , "martin.lau@linux.dev" , "eddyz87@gmail.com" , "yonghong.song@linux.dev" , "john.fastabend@gmail.com" , "kpsingh@kernel.org" , "sdf@fomichev.me" , "haoluo@google.com" , "jgg@ziepe.ca" , "jhubbard@nvidia.com" , "peterx@redhat.com" , "jannh@google.com" , "pfalcato@suse.de" , "shuah@kernel.org" , "seanjc@google.com" , "kvm@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "kvmarm@lists.linux.dev" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" , "bpf@vger.kernel.org" , "linux-kselftest@vger.kernel.org" , "Cali, Marco" , "Kalyazin, Nikita" , "Thomson, Jack" , "derekmn@amazon.co.uk" , "tabba@google.com" , "ackerleytng@google.com" References: <20250924151101.2225820-4-patrick.roy@campus.lmu.de> <20250924152214.7292-1-roypat@amazon.co.uk> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: A829E14000A X-Stat-Signature: oh8ux6o7chj13pzxpyiywieeza6n168t X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1758796019-707741 X-HE-Meta: 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 eCCRtXgB 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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: On 24.09.25 17:22, Roy, Patrick wrote: > Add a no-op stub for kvm_arch_gmem_invalidate if > CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=n. This allows defining > kvm_gmem_free_folio without ifdef-ery, which allows more cleanly using > guest_memfd's free_folio callback for non-arch-invalidation related > code. > > Signed-off-by: Patrick Roy > --- We'll now always perform a callback from the core, but I guess that's tolerable. Acked-by: David Hildenbrand -- Cheers David / dhildenb