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authorPeter Collingbourne <pcc@google.com>2021-06-03 02:52:28 +0300
committerWill Deacon <will@kernel.org>2021-06-04 21:32:21 +0300
commit7a3b835371883558eb63e069d891bd87f562380d (patch)
treece4fb6dc7bc68fd8047f7d65b0b55caa310c1b68 /mm/kasan/common.c
parent92638b4e1b47f97d7269e74465dedf73096f777d (diff)
downloadlinux-7a3b835371883558eb63e069d891bd87f562380d.tar.xz
kasan: use separate (un)poison implementation for integrated init
Currently with integrated init page_alloc.c needs to know whether kasan_alloc_pages() will zero initialize memory, but this will start becoming more complicated once we start adding tag initialization support for user pages. To avoid page_alloc.c needing to know more details of what integrated init will do, move the unpoisoning logic for integrated init into the HW tags implementation. Currently the logic is identical but it will diverge in subsequent patches. For symmetry do the same for poisoning although this logic will be unaffected by subsequent patches. Signed-off-by: Peter Collingbourne <pcc@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://linux-review.googlesource.com/id/I2c550234c6c4a893c48c18ff0c6ce658c7c67056 Link: https://lore.kernel.org/r/20210602235230.3928842-3-pcc@google.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'mm/kasan/common.c')
-rw-r--r--mm/kasan/common.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 6bb87f2acd4e..0ecd293af344 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -97,7 +97,7 @@ slab_flags_t __kasan_never_merge(void)
return 0;
}
-void __kasan_alloc_pages(struct page *page, unsigned int order, bool init)
+void __kasan_unpoison_pages(struct page *page, unsigned int order, bool init)
{
u8 tag;
unsigned long i;
@@ -111,7 +111,7 @@ void __kasan_alloc_pages(struct page *page, unsigned int order, bool init)
kasan_unpoison(page_address(page), PAGE_SIZE << order, init);
}
-void __kasan_free_pages(struct page *page, unsigned int order, bool init)
+void __kasan_poison_pages(struct page *page, unsigned int order, bool init)
{
if (likely(!PageHighMem(page)))
kasan_poison(page_address(page), PAGE_SIZE << order,