From: joel@joelfernandes.org (Joel Fernandes)
To: linux-riscv@lists.infradead.org
Subject: [PATCH -next-akpm 3/3] mm: select HAVE_MOVE_PMD in x86 for faster mremap
Date: Thu, 8 Nov 2018 10:12:01 -0800 [thread overview]
Message-ID: <20181108181201.88826-4-joelaf@google.com> (raw)
In-Reply-To: <20181108181201.88826-1-joelaf@google.com>
From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
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.
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 605bec0c228f..05f3667de0d2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -173,6 +173,7 @@ 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
--
2.19.1.930.g4563a0d9d0-goog
WARNING: multiple messages have this Message-ID (diff)
From: Joel Fernandes <joel@joelfernandes.org>
To: linux-kernel@vger.kernel.org
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>,
Michal Hocko <mhocko@kernel.org>,
linux-mm@kvack.org, lokeshgidra@google.com,
"Joel Fernandes \(Google\)" <joel@joelfernandes.org>,
linux-riscv@lists.infradead.org, anton.ivanov@kot-begemot.co.uk,
Jonas Bonn <jonas@southpole.se>,
linux-s390@vger.kernel.org, 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. Bottomley" <jejb@parisc-linux.org>,
kasan-dev@googlegroups.com, kvmarm@lists.cs.columbia.edu,
Ingo Molnar <mingo@redhat.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
linux-snps-arc@lists.infradead.org, kernel-team@android.com,
Sam Creasey <sammy@sammy.net>, Fenghua Yu <fenghua.yu@intel.com>,
Jeff Dike <jdike@addtoit.com>,
linux-um@lists.infradead.org,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Julia Lawall <Julia.Lawall@lip6.fr>,
linux-m68k@lists.linux-m68k.org, Borislav Petkov <bp@alien8.de>,
Andy Lutomirski <luto@kernel.org>,
nios2-dev@lists.rocketboards.org,
"Kirill A . 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>
Subject: [PATCH -next-akpm 3/3] mm: select HAVE_MOVE_PMD in x86 for faster mremap
Date: Thu, 8 Nov 2018 10:12:01 -0800 [thread overview]
Message-ID: <20181108181201.88826-4-joelaf@google.com> (raw)
Message-ID: <20181108181201.HnNgdMmpUq2T7p11MIL-eI85N58nXZ7G_jcR_BmJkjg@z> (raw)
In-Reply-To: <20181108181201.88826-1-joelaf@google.com>
From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
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.
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 605bec0c228f..05f3667de0d2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -173,6 +173,7 @@ 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
--
2.19.1.930.g4563a0d9d0-goog
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next prev parent reply other threads:[~2018-11-08 18:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-08 18:11 [PATCH -next-akpm 0/3] Add support for fast mremap Joel Fernandes
2018-11-08 18:11 ` Joel Fernandes
2018-11-08 18:11 ` [PATCH -next-akpm 1/3] mm: treewide: remove unused address argument from pte_alloc functions (v2) Joel Fernandes
2018-11-08 18:11 ` Joel Fernandes
2018-11-08 18:12 ` [PATCH -next-akpm 2/3] mm: speed up mremap by 20x on large regions (v5) Joel Fernandes
2018-11-08 18:12 ` Joel Fernandes
2018-11-08 18:12 ` Joel Fernandes [this message]
2018-11-08 18:12 ` [PATCH -next-akpm 3/3] mm: select HAVE_MOVE_PMD in x86 for faster mremap Joel Fernandes
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