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Restrict supported alignment for malloc_domainset_aligned(9) to PAGE_SIZE.

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UMA page_alloc() does not take an alignment, so UMA can only handle
alignment less then page size.

Noted by:	alc
Reviewed by:	alc, markj (previous version)
Discussed with:	jrtc27
Tested by:	pho (previous version)
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D28219
This commit is contained in:
Konstantin Belousov 2021-01-18 11:01:23 +02:00
parent e6d795d154
commit 0781c79d48
1 changed files with 2 additions and 2 deletions
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4
sys/kern/kern_malloc.c
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@ -772,7 +772,7 @@ malloc_domainset_aligned(size_t size, size_t align,
KASSERT(align != 0 && powerof2(align),
("malloc_domainset_aligned: wrong align %#zx size %#zx",
align, size));
KASSERT(align <= kmemzones[nitems(kmemzones) - 2].kz_size,
KASSERT(align <= PAGE_SIZE,
("malloc_domainset_aligned: align %#zx (size %#zx) too large",
align, size));
@ -1173,7 +1173,7 @@ mallocinit(void *dummy)
align = UMA_ALIGN_PTR;
if (powerof2(size) && size > sizeof(void *))
align = size - 1;
align = MIN(size, PAGE_SIZE) - 1;
for (subzone = 0; subzone < numzones; subzone++) {
kmemzones[indx].kz_zone[subzone] =
uma_zcreate(name, size,