diff options
| -rw-r--r-- | sys/vm/uma_core.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c index a27dba4b01f1..661c98b272da 100644 --- a/sys/vm/uma_core.c +++ b/sys/vm/uma_core.c @@ -3249,19 +3249,31 @@ uma_kcreate(uma_zone_t zone, size_t size, uma_init uminit, uma_fini fini, return (zone_alloc_item(kegs, &args, UMA_ANYDOMAIN, M_WAITOK)); } -/* Public functions */ -/* See uma.h */ -void -uma_set_cache_align_mask(unsigned int mask) + +static void +check_align_mask(unsigned int mask) { + KASSERT(powerof2(mask + 1), + ("UMA: %s: Not the mask of a power of 2 (%#x)", __func__, mask)); /* * Make sure the stored align mask doesn't have its highest bit set, * which would cause implementation-defined behavior when passing it as * the 'align' argument of uma_zcreate(). Such very large alignments do * not make sense anyway. */ - uma_cache_align_mask = mask & ~(1U << 31); + KASSERT(mask <= INT_MAX, + ("UMA: %s: Mask too big (%#x)", __func__, mask)); +} + +/* Public functions */ +/* See uma.h */ +void +uma_set_cache_align_mask(unsigned int mask) +{ + + check_align_mask(mask); + uma_cache_align_mask = mask; } /* Returns the alignment mask to use to request cache alignment. */ @@ -3280,8 +3292,7 @@ uma_zcreate(const char *name, size_t size, uma_ctor ctor, uma_dtor dtor, struct uma_zctor_args args; uma_zone_t res; - KASSERT(powerof2(align + 1), ("invalid zone alignment %d for \"%s\"", - align, name)); + check_align_mask(align); /* This stuff is essential for the zone ctor */ memset(&args, 0, sizeof(args)); |