From: Andrey Konovalov <andreyknvl@google.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Dmitry Vyukov <dvyukov@google.com>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>
Cc: Will Deacon <will.deacon@arm.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Peter Collingbourne <pcc@google.com>,
Evgenii Stepanov <eugenis@google.com>,
Branislav Rankov <Branislav.Rankov@arm.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
kasan-dev@googlegroups.com,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH v2 00/12] kasan: optimizations and fixes for HW_TAGS
Date: Fri, 5 Feb 2021 16:39:01 +0100 [thread overview]
Message-ID: <cover.1612538932.git.andreyknvl@google.com> (raw)
This patchset goes on top of:
1. Vincenzo's async support patches [1], and
2. "kasan: untag addresses for KFENCE" fix [2] (already in mm).
[1] https://lore.kernel.org/linux-arm-kernel/20210130165225.54047-1-vincenzo.frascino@arm.com/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=akpm&id=dec4728fab910da0c86cf9a97e980f4244ebae9f
This patchset makes the HW_TAGS mode more efficient, mostly by reworking
poisoning approaches and simplifying/inlining some internal helpers.
With this change, the overhead of HW_TAGS annotations excluding setting
and checking memory tags is ~3%. The performance impact caused by tags
will be unknown until we have hardware that supports MTE.
As a side-effect, this patchset speeds up generic KASAN by ~15%.
Andrey Konovalov (12):
kasan, mm: don't save alloc stacks twice
kasan, mm: optimize kmalloc poisoning
kasan: optimize large kmalloc poisoning
kasan: clean up setting free info in kasan_slab_free
kasan: unify large kfree checks
kasan: rework krealloc tests
kasan, mm: fail krealloc on freed objects
kasan, mm: optimize krealloc poisoning
kasan: ensure poisoning size alignment
arm64: kasan: simplify and inline MTE functions
kasan: inline HW_TAGS helper functions
arm64: kasan: export MTE symbols for KASAN tests
arch/arm64/include/asm/cache.h | 1 -
arch/arm64/include/asm/kasan.h | 1 +
arch/arm64/include/asm/mte-def.h | 2 +
arch/arm64/include/asm/mte-kasan.h | 65 ++++++++--
arch/arm64/include/asm/mte.h | 2 -
arch/arm64/kernel/mte.c | 48 +-------
arch/arm64/lib/mte.S | 16 ---
include/linux/kasan.h | 25 ++--
lib/test_kasan.c | 111 +++++++++++++++--
mm/kasan/common.c | 187 ++++++++++++++++++++---------
mm/kasan/kasan.h | 72 +++++++++--
mm/kasan/shadow.c | 53 ++++----
mm/slab_common.c | 18 ++-
mm/slub.c | 3 +-
14 files changed, 418 insertions(+), 186 deletions(-)
--
2.30.0.365.g02bc693789-goog
next reply other threads:[~2021-02-05 15:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 15:39 Andrey Konovalov [this message]
2021-02-05 15:39 ` [PATCH v2 01/12] kasan, mm: don't save alloc stacks twice Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 02/12] kasan, mm: optimize kmalloc poisoning Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 03/12] kasan: optimize large " Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 04/12] kasan: clean up setting free info in kasan_slab_free Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 05/12] kasan: unify large kfree checks Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 06/12] kasan: rework krealloc tests Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 07/12] kasan, mm: fail krealloc on freed objects Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 08/12] kasan, mm: optimize krealloc poisoning Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 09/12] kasan: ensure poisoning size alignment Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 10/12] arm64: kasan: simplify and inline MTE functions Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 11/12] kasan: inline HW_TAGS helper functions Andrey Konovalov
2021-02-05 15:39 ` [PATCH v2 12/12] arm64: kasan: export MTE symbols for KASAN tests Andrey Konovalov
2021-02-08 17:42 ` Christoph Hellwig
2021-02-09 15:18 ` Andrey Konovalov
2021-02-05 16:25 ` [PATCH v2 00/12] kasan: optimizations and fixes for HW_TAGS Andrey Konovalov
2021-02-05 16:53 ` Andrey Konovalov
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