[PATCH -next 3/3] mm: select HAVE_MOVE_PMD in x86 for faster mremap
From: Joel Fernandes <hidden>
Date: 2018-11-03 04:00:57
Also in:
kvmarm, linux-alpha, linux-mips, linux-mm, linux-riscv, linux-um
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: "Joel Fernandes (Google)" <redacted> 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 <redacted> Acked-by: Kirill A. Shutemov <redacted> Signed-off-by: Joel Fernandes (Google) <redacted> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ba7e3464ee92..48aef01a0bd1 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
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2.19.1.930.g4563a0d9d0-goog