[1/2] kasan: Cleanup the __HAVE_ARCH_SHADOW_MAP usage
Commit Message
As Linus suggested, __HAVE_ARCH_XYZ is stupid and only for historical
uses. So cleanup the __HAVE_ARCH_SHADOW_MAP usage and use self-defined
macros instead.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
arch/loongarch/include/asm/kasan.h | 10 ++++++++--
include/linux/kasan.h | 2 +-
mm/kasan/kasan.h | 8 +++-----
3 files changed, 12 insertions(+), 8 deletions(-)
@@ -10,8 +10,6 @@
#include <asm/io.h>
#include <asm/pgtable.h>
-#define __HAVE_ARCH_SHADOW_MAP
-
#define KASAN_SHADOW_SCALE_SHIFT 3
#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
@@ -68,6 +66,7 @@ static __always_inline bool kasan_arch_is_ready(void)
return !kasan_early_stage;
}
+#define kasan_mem_to_shadow kasan_mem_to_shadow
static inline void *kasan_mem_to_shadow(const void *addr)
{
if (!kasan_arch_is_ready()) {
@@ -97,6 +96,7 @@ static inline void *kasan_mem_to_shadow(const void *addr)
}
}
+#define kasan_shadow_to_mem kasan_shadow_to_mem
static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
{
unsigned long addr = (unsigned long)shadow_addr;
@@ -119,6 +119,12 @@ static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
}
}
+#define addr_has_metadata addr_has_metadata
+static __always_inline bool addr_has_metadata(const void *addr)
+{
+ return (kasan_mem_to_shadow((void *)addr) != NULL);
+}
+
void kasan_init(void);
asmlinkage void kasan_early_init(void);
@@ -54,7 +54,7 @@ extern p4d_t kasan_early_shadow_p4d[MAX_PTRS_PER_P4D];
int kasan_populate_early_shadow(const void *shadow_start,
const void *shadow_end);
-#ifndef __HAVE_ARCH_SHADOW_MAP
+#ifndef kasan_mem_to_shadow
static inline void *kasan_mem_to_shadow(const void *addr)
{
return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT)
@@ -291,7 +291,7 @@ struct kasan_stack_ring {
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
-#ifndef __HAVE_ARCH_SHADOW_MAP
+#ifndef kasan_shadow_to_mem
static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
{
return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET)
@@ -299,15 +299,13 @@ static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
}
#endif
+#ifndef addr_has_metadata
static __always_inline bool addr_has_metadata(const void *addr)
{
-#ifdef __HAVE_ARCH_SHADOW_MAP
- return (kasan_mem_to_shadow((void *)addr) != NULL);
-#else
return (kasan_reset_tag(addr) >=
kasan_shadow_to_mem((void *)KASAN_SHADOW_START));
-#endif
}
+#endif
/**
* kasan_check_range - Check memory region, and report if invalid access.