linux-kernel - [PATCH 9/9] kasan/powerpc: call kasan_init_generic in kasan

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Message-Id: <20250625095224.118679-10-snovitoll@gmail.com>
Date: Wed, 25 Jun 2025 14:52:24 +0500
From: Sabyrzhan Tasbolatov <snovitoll@...il.com>
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Subject: [PATCH 9/9] kasan/powerpc: call kasan_init_generic in kasan_init

Call kasan_init_generic() which enables the static flag
to mark generic KASAN initialized, otherwise it's an inline stub.
Also prints the banner from the single place.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218315
Fixes: 55d77bae7342 ("kasan: fix Oops due to missing calls to kasan_arch_is_ready()")
Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@...il.com>
---
 arch/powerpc/include/asm/kasan.h       | 14 --------------
 arch/powerpc/mm/kasan/init_book3s_64.c |  6 +-----
 2 files changed, 1 insertion(+), 19 deletions(-)

diff --git a/arch/powerpc/include/asm/kasan.h b/arch/powerpc/include/asm/kasan.h
index b5bbb94c51f..23a06fbec72 100644
--- a/arch/powerpc/include/asm/kasan.h
+++ b/arch/powerpc/include/asm/kasan.h
@@ -52,20 +52,6 @@
 
 #endif
 
-#ifdef CONFIG_KASAN
-#ifdef CONFIG_PPC_BOOK3S_64
-DECLARE_STATIC_KEY_FALSE(powerpc_kasan_enabled_key);
-
-static __always_inline bool kasan_arch_is_ready(void)
-{
-	if (static_branch_likely(&powerpc_kasan_enabled_key))
-		return true;
-	return false;
-}
-
-#define kasan_arch_is_ready kasan_arch_is_ready
-#endif
-
 void kasan_early_init(void);
 void kasan_mmu_init(void);
 void kasan_init(void);
diff --git a/arch/powerpc/mm/kasan/init_book3s_64.c b/arch/powerpc/mm/kasan/init_book3s_64.c
index 7d959544c07..dcafa641804 100644
--- a/arch/powerpc/mm/kasan/init_book3s_64.c
+++ b/arch/powerpc/mm/kasan/init_book3s_64.c
@@ -19,8 +19,6 @@
 #include <linux/memblock.h>
 #include <asm/pgalloc.h>
 
-DEFINE_STATIC_KEY_FALSE(powerpc_kasan_enabled_key);
-
 static void __init kasan_init_phys_region(void *start, void *end)
 {
 	unsigned long k_start, k_end, k_cur;
@@ -92,11 +90,9 @@ void __init kasan_init(void)
 	 */
 	memset(kasan_early_shadow_page, 0, PAGE_SIZE);
 
-	static_branch_inc(&powerpc_kasan_enabled_key);
-
 	/* Enable error messages */
 	init_task.kasan_depth = 0;
-	pr_info("KASAN init done\n");
+	kasan_init_generic();
 }
 
 void __init kasan_early_init(void) { }
-- 
2.34.1