Implemented default hugepage size verification (default_hugepagesz=)
in order to allow allocation of defined number of pages (hugepages=)
only for supported hugepage sizes.
Signed-off-by: Victor Aoqui <vict...@linux.vnet.ibm.com>
---
v2:
- Renamed default_hugepage_setup_sz function to hugetlb_default_size_setup;
- Added powerpc string to error message.
arch/powerpc/mm/hugetlbpage.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index e1bf5ca..3a142fe 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -780,6 +780,21 @@ static int __init hugepage_setup_sz(char *str)
}
__setup("hugepagesz=", hugepage_setup_sz);
+static int __init hugetlb_default_size_setup(char *str)
+{
+ unsigned long long size;
+
+ size = memparse(str, &str);
+
+ if (add_huge_page_size(size) != 0) {
+ hugetlb_bad_size();
+ pr_err("Invalid powerpc default huge page size
specified(%llu)\n", size);
+ }
+
+ return 1;
+}
+__setup("default_hugepagesz=", hugetlb_default_size_setup);
+
struct kmem_cache *hugepte_cache;
static int __init hugetlbpage_init(void)
{
--
1.8.3.1
