linux-kernel - [PATCH v4 06/12] arch/loongarch: don't initialize kasan if it's disabled

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Message-ID: <20251128033320.1349620-7-bhe@redhat.com>
Date: Fri, 28 Nov 2025 11:33:14 +0800
From: Baoquan He <bhe@...hat.com>
To: linux-mm@...ck.org
Cc: ryabinin.a.a@...il.com,
	andreyknvl@...il.com,
	glider@...gle.com,
	dvyukov@...gle.com,
	vincenzo.frascino@....com,
	akpm@...ux-foundation.org,
	kasan-dev@...glegroups.com,
	linux-kernel@...r.kernel.org,
	kexec@...ts.infradead.org,
	elver@...gle.com,
	sj@...nel.org,
	lorenzo.stoakes@...cle.com,
	snovitoll@...il.com,
	christophe.leroy@...roup.eu,
	Baoquan He <bhe@...hat.com>,
	loongarch@...ts.linux.dev
Subject: [PATCH v4 06/12] arch/loongarch: don't initialize kasan if it's disabled

Signed-off-by: Baoquan He <bhe@...hat.com>
Cc: loongarch@...ts.linux.dev
---
 arch/loongarch/mm/kasan_init.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/loongarch/mm/kasan_init.c b/arch/loongarch/mm/kasan_init.c
index 170da98ad4f5..61bce6a4b4bb 100644
--- a/arch/loongarch/mm/kasan_init.c
+++ b/arch/loongarch/mm/kasan_init.c
@@ -265,6 +265,8 @@ void __init kasan_init(void)
 	u64 i;
 	phys_addr_t pa_start, pa_end;
 
+	if (kasan_arg_disabled)
+		return;
 	/*
 	 * If PGDIR_SIZE is too large for cpu_vabits, KASAN_SHADOW_END will
 	 * overflow UINTPTR_MAX and then looks like a user space address.
-- 
2.41.0