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From: Lecopzer Chen <lecopzer.chen@mediatek.com>
To: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <kasan-dev@googlegroups.com>,
	<catalin.marinas@arm.com>, <will@kernel.org>
Cc: <ryabinin.a.a@gmail.com>, <glider@google.com>,
	<andreyknvl@gmail.com>, <dvyukov@google.com>,
	<akpm@linux-foundation.org>, <tyhicks@linux.microsoft.com>,
	<maz@kernel.org>, <rppt@kernel.org>, <linux@roeck-us.net>,
	<gustavoars@kernel.org>, <yj.chiang@mediatek.com>,
	Lecopzer Chen <lecopzer.chen@mediatek.com>
Subject: [PATCH v4 2/5] arm64: kasan: abstract _text and _end to KERNEL_START/END
Date: Wed, 24 Mar 2021 12:05:19 +0800	[thread overview]
Message-ID: <20210324040522.15548-3-lecopzer.chen@mediatek.com> (raw)
In-Reply-To: <20210324040522.15548-1-lecopzer.chen@mediatek.com>

Arm64 provides defined macro for KERNEL_START and KERNEL_END,
thus replace them by the abstration instead of using _text and _end.

Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
Acked-by: Andrey Konovalov <andreyknvl@gmail.com>
Tested-by: Andrey Konovalov <andreyknvl@gmail.com>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/arm64/mm/kasan_init.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c
index 20d06008785f..cd2653b7b174 100644
--- a/arch/arm64/mm/kasan_init.c
+++ b/arch/arm64/mm/kasan_init.c
@@ -218,8 +218,8 @@ static void __init kasan_init_shadow(void)
 	phys_addr_t pa_start, pa_end;
 	u64 i;
 
-	kimg_shadow_start = (u64)kasan_mem_to_shadow(_text) & PAGE_MASK;
-	kimg_shadow_end = PAGE_ALIGN((u64)kasan_mem_to_shadow(_end));
+	kimg_shadow_start = (u64)kasan_mem_to_shadow(KERNEL_START) & PAGE_MASK;
+	kimg_shadow_end = PAGE_ALIGN((u64)kasan_mem_to_shadow(KERNEL_END));
 
 	mod_shadow_start = (u64)kasan_mem_to_shadow((void *)MODULES_VADDR);
 	mod_shadow_end = (u64)kasan_mem_to_shadow((void *)MODULES_END);
@@ -240,7 +240,7 @@ static void __init kasan_init_shadow(void)
 	clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
 
 	kasan_map_populate(kimg_shadow_start, kimg_shadow_end,
-			   early_pfn_to_nid(virt_to_pfn(lm_alias(_text))));
+			   early_pfn_to_nid(virt_to_pfn(lm_alias(KERNEL_START))));
 
 	kasan_populate_early_shadow(kasan_mem_to_shadow((void *)PAGE_END),
 				   (void *)mod_shadow_start);
-- 
2.25.1
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  parent reply	other threads:[~2021-03-24  4:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-24  4:05 [PATCH v4 0/5] arm64: kasan: support CONFIG_KASAN_VMALLOC Lecopzer Chen
2021-03-24  4:05 ` [PATCH v4 1/5] arm64: kasan: don't populate vmalloc area for CONFIG_KASAN_VMALLOC Lecopzer Chen
2021-03-24  4:05 ` Lecopzer Chen [this message]
2021-03-24  4:05 ` [PATCH v4 3/5] arm64: Kconfig: support CONFIG_KASAN_VMALLOC Lecopzer Chen
2021-03-24  4:05 ` [PATCH v4 4/5] arm64: kaslr: support randomized module area with KASAN_VMALLOC Lecopzer Chen
2021-03-24  4:05 ` [PATCH v4 5/5] arm64: Kconfig: select KASAN_VMALLOC if KANSAN_GENERIC is enabled Lecopzer Chen
2021-03-29 12:54   ` Will Deacon
2021-03-30  8:14     ` Lecopzer Chen
2021-03-30 15:41       ` Andrey Konovalov
2021-03-29 12:28 ` [PATCH v4 0/5] arm64: kasan: support CONFIG_KASAN_VMALLOC Catalin Marinas

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