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AJvYcCW5IobBXILzJ2dzp0sVZVl8zaN60vHsQ2saPQkolM/BEgWO2fSEvH+mHUeu+w/dUChlp99ysDDLSQ==@kvack.org X-Gm-Message-State: AOJu0YzSgObqQpVZs/zUR+PaymakCQikB81P0IAXyABq9ryzx6CiGL01 wFmP1qcibXUmFWcjYrNLREPHojTKWXTgDcxZsxfa7oeRCL8GOcS9i+Lskl1fbTy3UqvO46bpM9a sRuaXkbBw9NtzHAJnxvd0+umcpyooh5S9I6rUTA== X-Gm-Gg: ASbGncvpxv83VMud6DhvrCtcULvaL7SeMcbi7m/Mj2yPMddeGdA601exK3WnBO/+1YZ 70eEscF2Cp/vLT96MUfoC+mxfYDnZHbZZBw== X-Google-Smtp-Source: AGHT+IFpSpr7Oj3qJ4QCRaMyoAXW3T3Mn4cdU1emXCSwCgqqhtbRU6US3c71ZX6xXcz95RXUg/DvJ1LdvBmYYHR+JRA= X-Received: by 2002:a05:6512:3c85:b0:53e:1c3e:34 with SMTP id 2adb3069b0e04-5402a6056a1mr984021e87.38.1733925202578; Wed, 11 Dec 2024 05:53:22 -0800 (PST) MIME-Version: 1.0 References: <20241210160556.2341497-1-arnd@kernel.org> <20241210160556.2341497-5-arnd@kernel.org> In-Reply-To: <20241210160556.2341497-5-arnd@kernel.org> From: Linus Walleij Date: Wed, 11 Dec 2024 14:53:11 +0100 Message-ID: Subject: Re: [PATCH 4/4] mm: drop HIGHPTE support altogether To: Arnd Bergmann Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , linux-mm@kvack.org, linux-rt-devel@lists.linux.dev, Ard Biesheuvel , Clark Williams , Jason Baron , Josh Poimboeuf , Mark Rutland , Matthew Wilcox , Peter Zijlstra , Russell King , Sebastian Andrzej Siewior , Steven Rostedt Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam05 X-Stat-Signature: fq5z3mzrmpxo3ihqnhm5f5ogqxx8e4yw X-Rspamd-Queue-Id: E35D11C001C X-Rspam-User: X-HE-Tag: 1733925193-416623 X-HE-Meta: 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 imeGfhCn GdPDwJcM6tjuw2Z2bWaGKd1piMqhKd2ArkdLUecNhjDgEpBn1lkh0hHeSvq6kk0grXn/XMcMWaidkntqLRAing1Df3h15epd9IdOSlFvZY4uc1aMz1XxM1vPKhpMBTMIBOIX3mj2nsvA0zKI0dZCSiozd+NCP1gwqY3xChPowWs1hNLxH705+qhhScHr6/VgdQvz5Q0wbfDWorBSxaSTkvuKm2uF5XE8od61VVQdITRt7HfKQ73vFjgcxNe0dt3rLGQqlEE0UduhNcpM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000649, 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 Tue, Dec 10, 2024 at 5:06=E2=80=AFPM Arnd Bergmann wro= te: > From: Arnd Bergmann > > With both x86 and arm having dropped CONFIG_HIGHPTE support, no > architecture is left using it, so remove the remnants in common code. > > It is likely that further cleanups are possible in the page table > code but those are not obvious from the config options. > > Signed-off-by: Arnd Bergmann Acked-by: Linus Walleij Mapping PTEs in highmem makes no sense to me, it's better that we try other solutions to move away from highmem use altogether. Yours, Linus Walleij