From: Andrey Ryabinin <a.ryabinin@samsung.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>,
David Keitel <dkeitel@codeaurora.org>,
Alexander Potapenko <glider@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Dmitry Vyukov <dvyukov@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Alexey Klimov <klimov.linux@gmail.com>,
Andrey Ryabinin <a.ryabinin@samsung.com>
Subject: [PATCH v4 6/7] ARM64: kasan: print memory assignment
Date: Fri, 24 Jul 2015 19:41:58 +0300 [thread overview]
Message-ID: <1437756119-12817-7-git-send-email-a.ryabinin@samsung.com> (raw)
In-Reply-To: <1437756119-12817-1-git-send-email-a.ryabinin@samsung.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 <a.ryabinin@samsung.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 ad87ce8..3930692 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,
--
2.4.5
--
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next prev parent reply other threads:[~2015-07-24 16:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 16:41 [PATCH v4 0/7] KASAN for arm64 Andrey Ryabinin
2015-07-24 16:41 ` [PATCH v4 1/7] x86/kasan: generate KASAN_SHADOW_OFFSET in Makefile Andrey Ryabinin
2015-07-27 16:40 ` Catalin Marinas
2015-07-27 17:52 ` Andrey Ryabinin
2015-07-24 16:41 ` [PATCH v4 2/7] mm: kasan: introduce generic kasan_populate_zero_shadow() Andrey Ryabinin
2015-07-27 14:23 ` Yury
2015-07-27 17:52 ` Andrey Ryabinin
2015-08-10 6:01 ` Aneesh Kumar K.V
2015-08-10 12:00 ` Andrey Ryabinin
2015-07-24 16:41 ` [PATCH v4 3/7] arm64: introduce VA_START macro - the first kernel virtual address Andrey Ryabinin
2015-07-24 16:41 ` [PATCH v4 4/7] arm64: move PGD_SIZE definition to pgalloc.h Andrey Ryabinin
2015-07-24 16:41 ` [PATCH v4 5/7] arm64: add KASAN support Andrey Ryabinin
2015-07-27 15:59 ` Catalin Marinas
2015-07-27 17:53 ` Andrey Ryabinin
2015-07-24 16:41 ` Andrey Ryabinin [this message]
2015-07-24 16:41 ` [PATCH v4 7/7] x86/kasan: switch to generic kasan_populate_zero_shadow() Andrey Ryabinin
2015-07-27 16:57 ` Catalin Marinas
2015-07-27 17:53 ` Andrey Ryabinin
2015-07-27 8:13 ` [PATCH v4 0/7] KASAN for arm64 Andrey Ryabinin
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