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authorGerald Schaefer <geraldsc@de.ibm.com>2008-04-30 13:38:46 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-04-30 13:38:47 +0200
commit53492b1de46a7576170e865062ffcfc93bb5650b (patch)
treebee94e5b2e8c19c1a094a25023cb82572707feb4 /fs
parent2e5061e40af88070984e3769eafb5a06022375fd (diff)
downloadop-kernel-dev-53492b1de46a7576170e865062ffcfc93bb5650b.zip
op-kernel-dev-53492b1de46a7576170e865062ffcfc93bb5650b.tar.gz
[S390] System z large page support.
This adds hugetlbfs support on System z, using both hardware large page support if available and software large page emulation on older hardware. Shared (large) page tables are implemented in software emulation mode, by using page->index of the first tail page from a compound large page to store page table information. Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/Kconfig3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 2e43d46..cf12c40 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1005,7 +1005,8 @@ config TMPFS_POSIX_ACL
config HUGETLBFS
bool "HugeTLB file system support"
- depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
+ depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
+ (S390 && 64BIT) || BROKEN
help
hugetlbfs is a filesystem backing for HugeTLB pages, based on
ramfs. For architectures that support it, say Y here and read
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