From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
To: Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Linus Walleij <linus.walleij@linaro.org>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>, Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org,
David Keitel <dkeitel@codeaurora.org>,
linux-mm@kvack.org, kasan-dev <kasan-dev@googlegroups.com>,
Alexey Klimov <klimov.linux@gmail.com>,
Yury <yury.norov@gmail.com>,
Andrey Konovalov <andreyknvl@google.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH v7 3/4] ARM64: kasan: print memory assignment
Date: Mon, 12 Oct 2015 18:52:59 +0300 [thread overview]
Message-ID: <1444665180-301-4-git-send-email-ryabinin.a.a@gmail.com> (raw)
In-Reply-To: <1444665180-301-1-git-send-email-ryabinin.a.a@gmail.com>
From: Linus Walleij <linus.walleij@linaro.org>
This prints out the virtual memory assigned to KASan in the
boot crawl along with other memory assignments, if and only
if KASan is activated.
Example dmesg from the Juno Development board:
Memory: 1691156K/2080768K available (5465K kernel code, 444K rwdata,
2160K rodata, 340K init, 217K bss, 373228K reserved, 16384K cma-reserved)
Virtual kernel memory layout:
kasan : 0xffffff8000000000 - 0xffffff9000000000 ( 64 GB)
vmalloc : 0xffffff9000000000 - 0xffffffbdbfff0000 ( 182 GB)
vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000 ( 8 GB maximum)
0xffffffbdc2000000 - 0xffffffbdc3fc0000 ( 31 MB actual)
fixed : 0xffffffbffabfd000 - 0xffffffbffac00000 ( 12 KB)
PCI I/O : 0xffffffbffae00000 - 0xffffffbffbe00000 ( 16 MB)
modules : 0xffffffbffc000000 - 0xffffffc000000000 ( 64 MB)
memory : 0xffffffc000000000 - 0xffffffc07f000000 ( 2032 MB)
.init : 0xffffffc0007f5000 - 0xffffffc00084a000 ( 340 KB)
.text : 0xffffffc000080000 - 0xffffffc0007f45b4 ( 7634 KB)
.data : 0xffffffc000850000 - 0xffffffc0008bf200 ( 445 KB)
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm64/mm/init.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index f5c0680..7a1f9a0 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -298,6 +298,9 @@ void __init mem_init(void)
#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)
pr_notice("Virtual kernel memory layout:\n"
+#ifdef CONFIG_KASAN
+ " kasan : 0x%16lx - 0x%16lx (%6ld GB)\n"
+#endif
" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n"
#ifdef CONFIG_SPARSEMEM_VMEMMAP
" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n"
@@ -310,6 +313,9 @@ void __init mem_init(void)
" .init : 0x%p" " - 0x%p" " (%6ld KB)\n"
" .text : 0x%p" " - 0x%p" " (%6ld KB)\n"
" .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
+#ifdef CONFIG_KASAN
+ MLG(KASAN_SHADOW_START, KASAN_SHADOW_END),
+#endif
MLG(VMALLOC_START, VMALLOC_END),
#ifdef CONFIG_SPARSEMEM_VMEMMAP
MLG((unsigned long)vmemmap,
--
2.4.9
--
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next prev parent reply other threads:[~2015-10-12 15:53 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-12 15:52 [PATCH v7 0/4] KASAN for arm64 Andrey Ryabinin
2015-10-12 15:52 ` [PATCH v7 1/4] arm64: move PGD_SIZE definition to pgalloc.h Andrey Ryabinin
2015-10-12 15:52 ` [PATCH v7 2/4] arm64: add KASAN support Andrey Ryabinin
2015-10-12 15:52 ` Andrey Ryabinin [this message]
2015-10-12 15:53 ` [PATCH v7 4/4] Documentation/features/KASAN: arm64 supports KASAN now Andrey Ryabinin
2015-10-13 8:34 ` [PATCH v7 0/4] KASAN for arm64 Catalin Marinas
2015-11-16 11:16 ` Suzuki K. Poulose
2015-11-16 15:34 ` Andrey Ryabinin
2015-11-16 16:51 ` Catalin Marinas
2015-11-18 14:33 ` Andrey Ryabinin
2015-11-18 15:48 ` Suzuki K. Poulose
2015-11-18 15:52 ` Ard Biesheuvel
2015-11-18 17:24 ` Catalin Marinas
2015-11-17 14:58 ` Suzuki K. Poulose
2015-11-17 15:47 ` Andrey Ryabinin
2015-11-26 12:10 ` Mark Rutland
2015-11-26 12:22 ` Andrey Ryabinin
2015-11-26 15:05 ` Catalin Marinas
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