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| author | Nick Piggin | 2008-07-30 07:23:13 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt | 2008-07-30 07:26:54 +0200 |
| commit | ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f (patch) | |
| tree | bf2a8845a031cb685219db2ddcb3d296b4a9ffab /arch/powerpc/Kconfig | |
| parent | powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs (diff) | |
| download | kernel-qcow2-linux-ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f.tar.gz kernel-qcow2-linux-ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f.tar.xz kernel-qcow2-linux-ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f.zip | |
powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3)
Implement lockless get_user_pages_fast for 64-bit powerpc.
Page table existence is guaranteed with RCU, and speculative page references
are used to take a reference to the pages without having a prior existence
guarantee on them.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 587da5e0990f..63c9cafda9c4 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -42,6 +42,9 @@ config GENERIC_HARDIRQS bool default y +config HAVE_GET_USER_PAGES_FAST + def_bool PPC64 + config HAVE_SETUP_PER_CPU_AREA def_bool PPC64 |