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| author |   Andrey Konovalov <andreyknvl@google.com> | 2021-04-29 22:59:59 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:41 -0700 |
| commit | aa5c219c60ccb75b50c16329885b65c275172e4a (patch) | |
| tree | aee5e3a5523e9908ab347da46ebbb5eafd1616c0 /mm/kasan/sw_tags.c | |
| parent | arm64: kasan: allow to init memory when setting tags (diff) | |
| download | linux-dev-aa5c219c60ccb75b50c16329885b65c275172e4a.tar.xz linux-dev-aa5c219c60ccb75b50c16329885b65c275172e4a.zip | |
kasan: init memory in kasan_(un)poison for HW_TAGS
This change adds an argument to kasan_poison() and kasan_unpoison() that
allows initializing memory along with setting the tags for HW_TAGS.
Combining setting allocation tags with memory initialization will improve
HW_TAGS KASAN performance when init_on_alloc/free is enabled.
This change doesn't integrate memory initialization with KASAN, this is
done is subsequent patches in this series.
Link: https://lkml.kernel.org/r/3054314039fa64510947e674180d675cab1b4c41.1615296150.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/kasan/sw_tags.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c index 00ae8913fc74..9df8e7f69e87 100644 --- a/mm/kasan/sw_tags.c +++ b/mm/kasan/sw_tags.c @@ -163,7 +163,7 @@ EXPORT_SYMBOL(__hwasan_storeN_noabort); void __hwasan_tag_memory(unsigned long addr, u8 tag, unsigned long size) { - kasan_poison((void *)addr, size, tag); + kasan_poison((void *)addr, size, tag, false); } EXPORT_SYMBOL(__hwasan_tag_memory); |