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authorHelge Deller <deller@gmx.de>2015-11-22 00:07:06 +0100
committerHelge Deller <deller@gmx.de>2015-11-22 12:23:10 +0100
commit736d2169338a50c8814efc186b5423aee43b0c68 (patch)
tree69165c38eafe94a26675eae70e4f09bae4863fa4 /arch/parisc/Kconfig
parentparisc: Use long branch to do_syscall_trace_exit (diff)
downloadlinux-dev-736d2169338a50c8814efc186b5423aee43b0c68.tar.xz
linux-dev-736d2169338a50c8814efc186b5423aee43b0c68.zip
parisc: Add Huge Page and HUGETLBFS support
This patch adds huge page support to allow userspace to allocate huge pages and to use hugetlbfs filesystem on 32- and 64-bit Linux kernels. A later patch will add kernel support to map kernel text and data on huge pages. The only requirement is, that the kernel needs to be compiled for a PA8X00 CPU (PA2.0 architecture). Older PA1.X CPUs do not support variable page sizes. 64bit Kernels are compiled for PA2.0 by default. Technically on parisc multiple physical huge pages may be needed to emulate standard 2MB huge pages. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to '')
-rw-r--r--arch/parisc/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index c36546959e86..729f89163bc3 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -108,6 +108,9 @@ config PGTABLE_LEVELS
default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
default 2
+config SYS_SUPPORTS_HUGETLBFS
+ def_bool y if PA20
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"