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From: Andrey Konovalov <andreyknvl@google.com>
To: 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: Branislav Rankov <Branislav.Rankov@arm.com>,
	Andrey Konovalov <andreyknvl@google.com>,
	Kevin Brodsky <kevin.brodsky@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Peter Collingbourne <pcc@google.com>,
	Evgenii Stepanov <eugenis@google.com>
Subject: [PATCH 00/12] kasan: optimizations and fixes for HW_TAGS
Date: Mon,  1 Feb 2021 20:43:24 +0100	[thread overview]
Message-ID: <cover.1612208222.git.andreyknvl@google.com> (raw)

This patchset goes on top of:

1. Vincenzo's async support patches, and
2. "kasan: untag addresses for KFENCE" fix.

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: remove krealloc side-effect
  kasan, mm: optimize krealloc poisoning
  kasan: ensure poisoning size alignment
  arm64: kasan: simplify and inline MTE functions
  kasan: always 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 |  64 ++++++++--
 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                   |  74 +++++++++---
 mm/kasan/shadow.c                  |  53 ++++----
 mm/slab_common.c                   |  18 ++-
 mm/slub.c                          |   3 +-
 14 files changed, 419 insertions(+), 186 deletions(-)

-- 
2.30.0.365.g02bc693789-goog


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WARNING: multiple messages have this Message-ID (diff)
From: Andrey Konovalov <andreyknvl@google.com>
To: 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: Andrew Morton <akpm@linux-foundation.org>,
	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 00/12] kasan: optimizations and fixes for HW_TAGS
Date: Mon,  1 Feb 2021 20:43:24 +0100	[thread overview]
Message-ID: <cover.1612208222.git.andreyknvl@google.com> (raw)

This patchset goes on top of:

1. Vincenzo's async support patches, and
2. "kasan: untag addresses for KFENCE" fix.

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: remove krealloc side-effect
  kasan, mm: optimize krealloc poisoning
  kasan: ensure poisoning size alignment
  arm64: kasan: simplify and inline MTE functions
  kasan: always 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 |  64 ++++++++--
 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                   |  74 +++++++++---
 mm/kasan/shadow.c                  |  53 ++++----
 mm/slab_common.c                   |  18 ++-
 mm/slub.c                          |   3 +-
 14 files changed, 419 insertions(+), 186 deletions(-)

-- 
2.30.0.365.g02bc693789-goog



             reply	other threads:[~2021-02-01 19:45 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-01 19:43 Andrey Konovalov [this message]
2021-02-01 19:43 ` [PATCH 00/12] kasan: optimizations and fixes for HW_TAGS Andrey Konovalov
2021-02-01 19:43 ` [PATCH 01/12] kasan, mm: don't save alloc stacks twice Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-02 16:06   ` Marco Elver
2021-02-02 16:06     ` Marco Elver
2021-02-02 18:01     ` Andrey Konovalov
2021-02-02 18:01       ` Andrey Konovalov
2021-02-02 18:40       ` Marco Elver
2021-02-02 18:40         ` Marco Elver
2021-02-01 19:43 ` [PATCH 02/12] kasan, mm: optimize kmalloc poisoning Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-02 16:25   ` Marco Elver
2021-02-02 16:25     ` Marco Elver
2021-02-02 17:15     ` Andrey Konovalov
2021-02-02 17:15       ` Andrey Konovalov
2021-02-02 17:39       ` Marco Elver
2021-02-02 17:39         ` Marco Elver
2021-02-01 19:43 ` [PATCH 03/12] kasan: optimize large " Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-02 16:57   ` Marco Elver
2021-02-02 16:57     ` Marco Elver
2021-02-01 19:43 ` [PATCH 04/12] kasan: clean up setting free info in kasan_slab_free Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-02 17:03   ` Marco Elver
2021-02-02 17:03     ` Marco Elver
2021-02-01 19:43 ` [PATCH 05/12] kasan: unify large kfree checks Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 12:13   ` Marco Elver
2021-02-03 12:13     ` Marco Elver
2021-02-01 19:43 ` [PATCH 06/12] kasan: rework krealloc tests Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 14:48   ` Marco Elver
2021-02-03 14:48     ` Marco Elver
2021-02-01 19:43 ` [PATCH 07/12] kasan, mm: remove krealloc side-effect Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 15:10   ` Marco Elver
2021-02-03 15:10     ` Marco Elver
2021-02-01 19:43 ` [PATCH 08/12] kasan, mm: optimize krealloc poisoning Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 14:34   ` Marco Elver
2021-02-03 14:34     ` Marco Elver
2021-02-01 19:43 ` [PATCH 09/12] kasan: ensure poisoning size alignment Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 15:31   ` Marco Elver
2021-02-03 15:31     ` Marco Elver
2021-02-01 19:43 ` [PATCH 10/12] arm64: kasan: simplify and inline MTE functions Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-01 22:44   ` Andrew Morton
2021-02-01 22:44     ` Andrew Morton
2021-02-04 12:39     ` Vincenzo Frascino
2021-02-04 12:39       ` Vincenzo Frascino
2021-02-02 15:42   ` Catalin Marinas
2021-02-02 15:42     ` Catalin Marinas
2021-02-02 18:04     ` Andrey Konovalov
2021-02-02 18:04       ` Andrey Konovalov
2021-02-04 12:37   ` Vincenzo Frascino
2021-02-04 12:37     ` Vincenzo Frascino
2021-02-01 19:43 ` [PATCH 11/12] kasan: always inline HW_TAGS helper functions Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-03 15:51   ` Marco Elver
2021-02-03 15:51     ` Marco Elver
2021-02-01 19:43 ` [PATCH 12/12] arm64: kasan: export MTE symbols for KASAN tests Andrey Konovalov
2021-02-01 19:43   ` Andrey Konovalov
2021-02-02 10:46   ` Will Deacon
2021-02-02 10:46     ` Will Deacon
2021-02-02 13:42     ` Andrey Konovalov
2021-02-02 13:42       ` Andrey Konovalov
2021-02-02 15:43   ` Catalin Marinas
2021-02-02 15:43     ` Catalin Marinas

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