| Message ID | 20181013013200.206928-4-joel@joelfernandes.org |
|---|---|
| State | New |
| Headers | show
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bh=bjYTsH4Iq69Ub7N2c7p2HOCfpyLGuHcm9WhDWE1Dnwg=; b=jqBRZZwtYnGBbF6iodYBNwF0AoZyMS8WlBClalzAvHE0W2Wdp3rV427BtpAwKs18H5 Fls6EOYh8JSinlj2v/KS52ZJZA7/gTUnm2Rwus1Acnu/DPbQe/kXiGz5W56XXCHel2R/ VkJPjmGQn8rjzBGFUb+XIzuM9PZ3ISrABq27bkcjwwwKg3gWkI60Xk9F+VtJhcHAXN1T EYNmG9F2JzpGWgmo0lvBVA3S87VUPWqxsEezPN2rPsRfC3tcRxtMoAHrlDZ8Iaq2wbKB 0pqOGll+ciRQrAuDjdawXjdJu+CHFxdBfCc3JX6ka3tPNPBfCzdcFPfJw5qTKS1Hw4TH VP3w== X-Gm-Message-State: ABuFfoi+Qp8kZqBvCI++cSa+iOvgd0CFO0ScoR9kp3Sr/wnMsHgroN5H sMFzR0B8TpFo3sKnFGEQWFId+Q== X-Google-Smtp-Source: ACcGV60ecPJwErRYv7rdeDNNhheUXmreqwFNvyYIFQM0w7YuygsKhKKgtC5tCiolpW/Ws3yIGetyhA== X-Received: by 2002:a63:2a11:: with SMTP id q17-v6mr7630469pgq.374.1539394345842; Fri, 12 Oct 2018 18:32:25 -0700 (PDT) Received: from joelaf.mtv.corp.google.com ([2620:0:1000:1601:3aef:314f:b9ea:889f]) by smtp.gmail.com with ESMTPSA id q7-v6sm6507828pfd.164.2018.10.12.18.32.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 12 Oct 2018 18:32:24 -0700 (PDT) From: "Joel Fernandes (Google)" <joel@joelfernandes.org> To: linux-kernel@vger.kernel.org Subject: [PATCH 3/4] arm64: select HAVE_MOVE_PMD for faster mremap (v1) Date: Fri, 12 Oct 2018 18:31:59 -0700 Message-Id: <20181013013200.206928-4-joel@joelfernandes.org> X-Mailer: git-send-email 2.19.0.605.g01d371f741-goog In-Reply-To: <20181013013200.206928-1-joel@joelfernandes.org> References: <20181013013200.206928-1-joel@joelfernandes.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181012_183234_477766_AD094C18 X-CRM114-Status: GOOD ( 10.33 ) X-Spam-Score: -0.1 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:444 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux on Synopsys ARC Processors <linux-snps-arc.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-snps-arc/> List-Post: <mailto:linux-snps-arc@lists.infradead.org> List-Help: <mailto:linux-snps-arc-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=subscribe> Cc: linux-mips@linux-mips.org, Rich Felker <dalias@libc.org>, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>, Catalin Marinas <catalin.marinas@arm.com>, Dave Hansen <dave.hansen@linux.intel.com>, Will Deacon <will.deacon@arm.com>, mhocko@kernel.org, linux-mm@kvack.org, lokeshgidra@google.com, "Joel Fernandes \(Google\)" <joel@joelfernandes.org>, linux-riscv@lists.infradead.org, elfring@users.sourceforge.net, Jonas Bonn <jonas@southpole.se>, kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato <ysato@users.sourceforge.jp>, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller <deller@gmx.de>, "maintainer:X86 ARCHITECTURE 32-BIT AND 64-BIT" <x86@kernel.org>, hughd@google.com, "James E.J. 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Shutemov" <kirill@shutemov.name>, Stafford Horne <shorne@gmail.com>, Guan Xuetao <gxt@pku.edu.cn>, Chris Zankel <chris@zankel.net>, Tony Luck <tony.luck@intel.com>, Richard Weinberger <richard@nod.at>, linux-parisc@vger.kernel.org, Max Filippov <jcmvbkbc@gmail.com>, pantin@google.com, minchan@kernel.org, Thomas Gleixner <tglx@linutronix.de>, linux-alpha@vger.kernel.org, Ley Foon Tan <lftan@altera.com>, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" <davem@davemloft.net> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" <linux-snps-arc-bounces@lists.infradead.org> Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
| Series |
Add support for fast mremap
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expand
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diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1b1a0e95c751..5d7c35c6f90c 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -135,6 +135,7 @@ config ARM64 select HAVE_IRQ_TIME_ACCOUNTING select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP if NUMA + select HAVE_MOVE_PMD select HAVE_NMI select HAVE_PATA_PLATFORM select HAVE_PERF_EVENTS
Moving page-tables at the PMD-level on arm64 is known to be safe. Enable this option so that we can do fast mremap when possible. Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+)