From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752299AbbJLPxE (ORCPT ); Mon, 12 Oct 2015 11:53:04 -0400 Received: from mail-lb0-f171.google.com ([209.85.217.171]:33994 "EHLO mail-lb0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752052AbbJLPw7 (ORCPT ); Mon, 12 Oct 2015 11:52:59 -0400 From: Andrey Ryabinin To: Will Deacon , Catalin Marinas , linux-arm-kernel@lists.infradead.org Cc: Linus Walleij , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Arnd Bergmann , linux-kernel@vger.kernel.org, David Keitel , linux-mm@kvack.org, kasan-dev , Alexey Klimov , Yury , Andrey Konovalov , Ard Biesheuvel Subject: [PATCH v7 3/4] ARM64: kasan: print memory assignment Date: Mon, 12 Oct 2015 18:52:59 +0300 Message-Id: <1444665180-301-4-git-send-email-ryabinin.a.a@gmail.com> X-Mailer: git-send-email 2.4.9 In-Reply-To: <1444665180-301-1-git-send-email-ryabinin.a.a@gmail.com> References: <1444665180-301-1-git-send-email-ryabinin.a.a@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Linus Walleij 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 Signed-off-by: Andrey Ryabinin Acked-by: Catalin Marinas --- 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