[PATCH 2/5] kasan, arm64: rename tagging-related routines

From: andrey . konovalov
Date: Fri Mar 10 2023 - 18:43:48 EST


From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>

Rename arch_enable_tagging_sync/async/asymm to
arch_enable_tag_checks_sync/async/asymm, as the new name better reflects
their function.

Also rename kasan_enable_tagging to kasan_enable_hw_tags for the same
reason.

Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
---
arch/arm64/include/asm/memory.h | 6 +++---
mm/kasan/hw_tags.c | 12 ++++++------
mm/kasan/kasan.h | 10 +++++-----
mm/kasan/kasan_test.c | 2 +-
4 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 78e5163836a0..faf42bff9a60 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -261,9 +261,9 @@ static inline const void *__tag_set(const void *addr, u8 tag)
}

#ifdef CONFIG_KASAN_HW_TAGS
-#define arch_enable_tagging_sync() mte_enable_kernel_sync()
-#define arch_enable_tagging_async() mte_enable_kernel_async()
-#define arch_enable_tagging_asymm() mte_enable_kernel_asymm()
+#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_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)
diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c
index d1bcb0205327..b092e37b69a7 100644
--- a/mm/kasan/hw_tags.c
+++ b/mm/kasan/hw_tags.c
@@ -205,7 +205,7 @@ void kasan_init_hw_tags_cpu(void)
* Enable async or asymm modes only when explicitly requested
* through the command line.
*/
- kasan_enable_tagging();
+ kasan_enable_hw_tags();
}

/* kasan_init_hw_tags() is called once on boot CPU. */
@@ -373,19 +373,19 @@ void __kasan_poison_vmalloc(const void *start, unsigned long size)

#endif

-void kasan_enable_tagging(void)
+void kasan_enable_hw_tags(void)
{
if (kasan_arg_mode == KASAN_ARG_MODE_ASYNC)
- hw_enable_tagging_async();
+ hw_enable_tag_checks_async();
else if (kasan_arg_mode == KASAN_ARG_MODE_ASYMM)
- hw_enable_tagging_asymm();
+ hw_enable_tag_checks_asymm();
else
- hw_enable_tagging_sync();
+ hw_enable_tag_checks_sync();
}

#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)

-EXPORT_SYMBOL_GPL(kasan_enable_tagging);
+EXPORT_SYMBOL_GPL(kasan_enable_hw_tags);

void kasan_force_async_fault(void)
{
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index b1895526d02f..a1613f5d7608 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -395,20 +395,20 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)

#ifdef CONFIG_KASAN_HW_TAGS

-#define hw_enable_tagging_sync() arch_enable_tagging_sync()
-#define hw_enable_tagging_async() arch_enable_tagging_async()
-#define hw_enable_tagging_asymm() arch_enable_tagging_asymm()
+#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_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)
#define hw_set_mem_tag_range(addr, size, tag, init) \
arch_set_mem_tag_range((addr), (size), (tag), (init))

-void kasan_enable_tagging(void);
+void kasan_enable_hw_tags(void);

#else /* CONFIG_KASAN_HW_TAGS */

-static inline void kasan_enable_tagging(void) { }
+static inline void kasan_enable_hw_tags(void) { }

#endif /* CONFIG_KASAN_HW_TAGS */

diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c
index 627eaf1ee1db..a375776f9896 100644
--- a/mm/kasan/kasan_test.c
+++ b/mm/kasan/kasan_test.c
@@ -148,7 +148,7 @@ static void kasan_test_exit(struct kunit *test)
kasan_sync_fault_possible()) { \
if (READ_ONCE(test_status.report_found) && \
!READ_ONCE(test_status.async_fault)) \
- kasan_enable_tagging(); \
+ kasan_enable_hw_tags(); \
migrate_enable(); \
} \
WRITE_ONCE(test_status.report_found, false); \
--
2.25.1