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Wed, 31 Jul 2024 03:18:20 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFbiyRYwcc7mzxbNr2j9CKiWLwtYHnw4iXERZ6Q+gmmNAwBwkH3zd03419QU5BCHgaYtt01lw== X-Received: by 2002:a17:907:3faa:b0:a7a:9f0f:ab2c with SMTP id a640c23a62f3a-a7d40087cdamr1036561866b.29.1722421100197; Wed, 31 Jul 2024 03:18:20 -0700 (PDT) Received: from [192.168.10.81] ([151.95.101.29]) by smtp.googlemail.com with ESMTPSA id a640c23a62f3a-a7acab52d51sm750409766b.79.2024.07.31.03.18.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 31 Jul 2024 03:18:19 -0700 (PDT) Message-ID: Date: Wed, 31 Jul 2024 12:18:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 48/84] KVM: Move x86's API to release a faultin page to common KVM To: Sean Christopherson Cc: Marc Zyngier , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, David Matlack , David Stevens References: <20240726235234.228822-1-seanjc@google.com> <20240726235234.228822-49-seanjc@google.com> <96df1dd5-cc31-4e84-84fd-ea75b4800be8@redhat.com> From: Paolo Bonzini Autocrypt: addr=pbonzini@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240731_031826_461741_C31D5A48 X-CRM114-Status: UNSURE ( 9.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 7/30/24 21:15, Sean Christopherson wrote: >> Does it make sense to move RET_PF_* to common code, and avoid a bool >> argument here? > After this series, probably? Especially if/when we make "struct kvm_page_fault" > a common structure and converge all arch code. In this series, definitely not, > as it would require even more patches to convert other architectures, and it's > not clear that it would be a net win, at least not without even more massaging. It does not seem to be hard, but I agree that all the other architectures right now use 0/-errno in the callers of kvm_release_faultin_page(). Paolo