Message ID | 20181013013200.206928-5-joel@joelfernandes.org |
---|---|
State | New |
Headers | show
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bh=jtAK3pAlFMeOO6SUm8Lh3Bmb29tPAciRzUtn881iM5M=; b=eszx8oOaTntToTyioUt4K7Hf61dYTWGisKM6lQhXijGGbPD2QDWwcgy/lhYu+2yzE/ e/Zuy3Mm34llFe6Waq+qaFvalRWapd21NBMS1yW3z+slUD8O4RXIRMWZciQ31Nfuasl+ vAr2lmB2yUE8ZSOyINQDM2Be3dBGa2+qeNUz4OUipPTioV5rvUK5hk7ptB0EcjmrbW9M KhYKy82vrSi9p3EkYa2nocT1bNj+Hy3rD2IVdnLJemo9dbFJPo0VOXOmLF7ILBKZ+s0X Ug1cHV/+UiZGMrjeitNGlxuuPdc9P/jiBV5bcYl1q2zazU17x5NdQ/y8QDJzj6leoM16 qd3A== X-Gm-Message-State: ABuFfoiU9DchBjLSrQ9mrLxOhxJKI7KuYeRn8yvy1F50U94ucnEVP/CM 4JclqW7hMjE75nbAIaFXjyC/cQ== X-Google-Smtp-Source: ACcGV60cRgU0XyfJPBpItPjBh+EP7iRiHLZbhDbgbD69TJC4FgrTPRZLx9S2q81RSPgQ8LHOmiT4Xw== X-Received: by 2002:a17:902:8687:: with SMTP id g7-v6mr8297604plo.30.1539394348522; Fri, 12 Oct 2018 18:32:28 -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.164.2018.10.12.18.32.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 12 Oct 2018 18:32:27 -0700 (PDT) From: "Joel Fernandes (Google)" <joel@joelfernandes.org> To: linux-kernel@vger.kernel.org Subject: [PATCH 4/4] x86: select HAVE_MOVE_PMD for faster mremap (v1) Date: Fri, 12 Oct 2018 18:32:00 -0700 Message-Id: <20181013013200.206928-5-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_183239_554071_94C29342 X-CRM114-Status: GOOD ( 10.13 ) 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:f8b0:4864:20:0:0:0:643 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/x86/Kconfig b/arch/x86/Kconfig index 1a0be022f91d..01c02a9d7825 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -171,6 +171,7 @@ config X86 select HAVE_MEMBLOCK_NODE_MAP select HAVE_MIXED_BREAKPOINTS_REGS select HAVE_MOD_ARCH_SPECIFIC + select HAVE_MOVE_PMD select HAVE_NMI select HAVE_OPROFILE select HAVE_OPTPROBES
Moving page-tables at the PMD-level on x86 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/x86/Kconfig | 1 + 1 file changed, 1 insertion(+)