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[2003:cb:c706:b800:3757:baed:f95e:20ac]) by smtp.gmail.com with ESMTPSA id hn6-20020a05600ca38600b003e21f01c426sm13465165wmb.9.2023.02.28.07.56.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Feb 2023 07:56:32 -0800 (PST) Message-ID: Date: Tue, 28 Feb 2023 16:56:30 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH mm-unstable v1 19/26] riscv/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE To: Palmer Dabbelt Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, hughd@google.com, jhubbard@nvidia.com, jgg@nvidia.com, rppt@linux.ibm.com, shy828301@gmail.com, vbabka@suse.cz, namit@vmware.com, aarcange@redhat.com, peterx@redhat.com, linux-mm@kvack.org, x86@kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, Paul Walmsley , aou@eecs.berkeley.edu References: From: David Hildenbrand Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: AE229140018 X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: 4wd4cnkd69xh438g4xnt5txxfygwcwha X-HE-Tag: 1677599796-500310 X-HE-Meta: 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 IfHbODXa vgOZQDd4jioc8GIV6Nani5pJ7JADnikKLWkUwe+eTR5t6ahHbo06hBhjWQjJP6iM3KkGOCblin1MyU5BIwM2ng0nVlkSksAaEuwrkKWY1D2lT633ccnHvr64ngkRh/r/hH/YMmvTGLJ1WqkxRCEovp8awy4WycdlAGhRAHKpJXdT5Kj0ZQX2gv4+VjEfVQzpa+Xj3SagHolSdARi2wwiw/yx5DlAcizvFofhGV1eZAyoL/64paMsRpbdzvCOy0CDKgQP04C8gZwNxZUVqSOD7c68bebPpRl3r+M727DKIAN6nQA+wEEzMsKoDcFQYINlx/v5SzAefVtoLsa5NZMm58JF4hp5DJKcZ4BaXrS52mFvZIBv5CGNGXGf9z465rNvySU4YhikM2nnjqPTpq9gq3ezl5bEhHL5wkCj+ 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: On 28.02.23 16:50, Palmer Dabbelt wrote: > On Fri, 13 Jan 2023 09:10:19 PST (-0800), david@redhat.com wrote: >> Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE by stealing one bit >> from the offset. This reduces the maximum swap space per file: on 32bit >> to 16 GiB (was 32 GiB). > > Seems fine to me, I doubt anyone wants a huge pile of swap on rv32. Patch is already upstream, so we can't add tags unfortunately. Thanks for the review! -- Thanks, David / dhildenb