[merged mm-stable] kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch removed from -mm tree

[merged mm-stable] kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: kasan, arm64: add arch_suppress_tag_checks_start/stop
has been removed from the -mm tree.  Its filename was
     kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan, arm64: add arch_suppress_tag_checks_start/stop
Date: Sat, 11 Mar 2023 00:43:32 +0100

Add two new tagging-related routines arch_suppress_tag_checks_start/stop
that suppress MTE tag checking via the TCO register.

These rouines are used in the next patch.

[andreyknvl@google.com: drop __ from mte_disable/enable_tco names]
  Link: https://lkml.kernel.org/r/7ad5e5a9db79e3aba08d8f43aca24350b04080f6.1680114854.git.andreyknvl@google.com
Link: https://lkml.kernel.org/r/75a362551c3c54b70ae59a3492cabb51c105fa6b.1678491668.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Weizhao Ouyang <ouyangweizhao@zeku.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arm64/include/asm/memory.h |    2 ++
 mm/kasan/kasan.h                |    2 ++
 2 files changed, 4 insertions(+)

--- a/arch/arm64/include/asm/memory.h~kasan-arm64-add-arch_suppress_tag_checks_start-stop
+++ a/arch/arm64/include/asm/memory.h
@@ -264,6 +264,8 @@ static inline const void *__tag_set(cons
 #define arch_enable_tag_checks_sync()		mte_enable_kernel_sync()
 #define arch_enable_tag_checks_async()		mte_enable_kernel_async()
 #define arch_enable_tag_checks_asymm()		mte_enable_kernel_asymm()
+#define arch_suppress_tag_checks_start()	mte_enable_tco()
+#define arch_suppress_tag_checks_stop()		mte_disable_tco()
 #define arch_force_async_tag_fault()		mte_check_tfsr_exit()
 #define arch_get_random_tag()			mte_get_random_tag()
 #define arch_get_mem_tag(addr)			mte_get_mem_tag(addr)
--- a/mm/kasan/kasan.h~kasan-arm64-add-arch_suppress_tag_checks_start-stop
+++ a/mm/kasan/kasan.h
@@ -398,6 +398,8 @@ static inline const void *arch_kasan_set
 #define hw_enable_tag_checks_sync()		arch_enable_tag_checks_sync()
 #define hw_enable_tag_checks_async()		arch_enable_tag_checks_async()
 #define hw_enable_tag_checks_asymm()		arch_enable_tag_checks_asymm()
+#define hw_suppress_tag_checks_start()		arch_suppress_tag_checks_start()
+#define hw_suppress_tag_checks_stop()		arch_suppress_tag_checks_stop()
 #define hw_force_async_tag_fault()		arch_force_async_tag_fault()
 #define hw_get_random_tag()			arch_get_random_tag()
 #define hw_get_mem_tag(addr)			arch_get_mem_tag(addr)
_

Patches currently in -mm which might be from andreyknvl@google.com are

kcov-improve-documentation.patch
kcov-improve-documentation-v2.patch
kcov-improve-documentation-v3.patch