Thread (107 messages) 107 messages, 6 authors, 2020-11-13

Re: [PATCH v9 18/44] kasan, arm64: rename kasan_init_tags and mark as __init

From: Alexander Potapenko <glider@google.com>
Date: 2020-11-11 15:05:33
Also in: linux-mm, lkml

On Tue, Nov 10, 2020 at 11:11 PM Andrey Konovalov [off-list ref] wrote:
Rename kasan_init_tags() to kasan_init_sw_tags() as the upcoming hardware
tag-based KASAN mode will have its own initialization routine.
Also similarly to kasan_init() mark kasan_init_tags() as __init.

Signed-off-by: Andrey Konovalov <redacted>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
quoted hunk ↗ jump to hunk
---
Change-Id: I99aa2f7115d38a34ed85b329dadab6c7d6952416
---
 arch/arm64/kernel/setup.c  | 2 +-
 arch/arm64/mm/kasan_init.c | 2 +-
 include/linux/kasan.h      | 4 ++--
 mm/kasan/sw_tags.c         | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 133257ffd859..bb79b09f73c8 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -358,7 +358,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
        smp_build_mpidr_hash();

        /* Init percpu seeds for random tags after cpus are set up. */
-       kasan_init_tags();
+       kasan_init_sw_tags();

 #ifdef CONFIG_ARM64_SW_TTBR0_PAN
        /*
diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index e35ce04beed1..d8e66c78440e 100644
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c
@@ -283,7 +283,7 @@ void __init kasan_init(void)
        kasan_init_shadow();
        kasan_init_depth();
 #if defined(CONFIG_KASAN_GENERIC)
-       /* CONFIG_KASAN_SW_TAGS also requires kasan_init_tags(). */
+       /* CONFIG_KASAN_SW_TAGS also requires kasan_init_sw_tags(). */
        pr_info("KernelAddressSanitizer initialized\n");
 #endif
 }
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 979d598e1c30..1d6ec3325163 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -191,7 +191,7 @@ static inline void kasan_record_aux_stack(void *ptr) {}

 #ifdef CONFIG_KASAN_SW_TAGS

-void kasan_init_tags(void);
+void __init kasan_init_sw_tags(void);

 void *kasan_reset_tag(const void *addr);
@@ -200,7 +200,7 @@ bool kasan_report(unsigned long addr, size_t size,

 #else /* CONFIG_KASAN_SW_TAGS */

-static inline void kasan_init_tags(void) { }
+static inline void kasan_init_sw_tags(void) { }

 static inline void *kasan_reset_tag(const void *addr)
 {
diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c
index d25f8641b7cd..b09a2c06abad 100644
--- a/mm/kasan/sw_tags.c
+++ b/mm/kasan/sw_tags.c
@@ -35,7 +35,7 @@

 static DEFINE_PER_CPU(u32, prng_state);

-void kasan_init_tags(void)
+void __init kasan_init_sw_tags(void)
 {
        int cpu;

--
2.29.2.222.g5d2a92d10f8-goog

-- 
Alexander Potapenko
Software Engineer

Google Germany GmbH
Erika-Mann-Straße, 33
80636 München

Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg

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