diff options
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index bcabbe02192b..63ca4241ea87 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3256,6 +3256,12 @@ static int __init hugetlb_init(void) } subsys_initcall(hugetlb_init); +/* Overwritten by architectures with more huge page sizes */ +bool __init __attribute((weak)) arch_hugetlb_valid_size(unsigned long size) +{ + return size == HPAGE_SIZE; +} + /* Should be called on processing a hugepagesz=... option */ void __init hugetlb_bad_size(void) { @@ -3331,12 +3337,21 @@ static int __init hugetlb_nrpages_setup(char *s) } __setup("hugepages=", hugetlb_nrpages_setup); -static int __init hugetlb_default_setup(char *s) +static int __init default_hugepagesz_setup(char *s) { - default_hstate_size = memparse(s, &s); + unsigned long size; + + size = (unsigned long)memparse(s, NULL); + + if (!arch_hugetlb_valid_size(size)) { + pr_err("HugeTLB: unsupported default_hugepagesz %s\n", s); + return 0; + } + + default_hstate_size = size; return 1; } -__setup("default_hugepagesz=", hugetlb_default_setup); +__setup("default_hugepagesz=", default_hugepagesz_setup); static unsigned int cpuset_mems_nr(unsigned int *array) { |