diff options
| author | Andrea Arcangeli <aarcange@redhat.com> | 2010-11-02 21:46:58 +0100 |
|---|---|---|
| committer | Andrea Arcangeli <aarcange@redhat.com> | 2010-11-02 20:47:43 +0000 |
| commit | 735d2a585dca624aa4cbc6586f4b0da2107b1450 (patch) | |
| tree | 2cc857bc5bd398e806f2b7b55d0f1b944dbfcb2c /mm | |
| parent | 8e8b82243f899168ed4b3530cc9309286d81b689 (diff) | |
don't allow transparent hugepage support without PSE
Archs implementing Transparent Hugepage Support must implement a
function called has_transparent_hugepage to be sure the virtual or
physical CPU supports Transparent Hugepages.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/huge_memory.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 253fa2cdd24f..ee395ff94c82 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -487,7 +487,15 @@ static int __init hugepage_init(void) int err; #ifdef CONFIG_SYSFS static struct kobject *hugepage_kobj; +#endif + err = -EINVAL; + if (!has_transparent_hugepage()) { + transparent_hugepage_flags = 0; + goto out; + } + +#ifdef CONFIG_SYSFS err = -ENOMEM; hugepage_kobj = kobject_create_and_add("transparent_hugepage", mm_kobj); if (unlikely(!hugepage_kobj)) { |