linux-kernel - [tip:x86/cleanups] x86: Drop KERNEL_IMAGE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-8e3c2a8cf647e2f3a1e9d38009b0d1c02145822f@git.kernel.org>
Date:	Tue, 2 Apr 2013 17:18:24 -0700
From:	tip-bot for Borislav Petkov <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	tglx@...utronix.de, hpa@...ux.intel.com, bp@...en8.de
Subject: [tip:x86/cleanups] x86: Drop KERNEL_IMAGE_START

Commit-ID:  8e3c2a8cf647e2f3a1e9d38009b0d1c02145822f
Gitweb:     http://git.kernel.org/tip/8e3c2a8cf647e2f3a1e9d38009b0d1c02145822f
Author:     Borislav Petkov <bp@...en8.de>
AuthorDate: Mon, 4 Mar 2013 21:16:17 +0100
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Tue, 2 Apr 2013 16:03:29 -0700

x86: Drop KERNEL_IMAGE_START

We have KERNEL_IMAGE_START and __START_KERNEL_map which both contain the
start of the kernel text mapping's virtual address. Remove the prior one
which has been replicated a lot less times around the tree.

No functionality change.

Signed-off-by: Borislav Petkov <bp@...en8.de>
Link: http://lkml.kernel.org/r/1362428180-8865-3-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/x86/include/asm/page_64_types.h | 1 -
 arch/x86/kernel/head64.c             | 6 +++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h
index 8b491e6..6c896fb 100644
--- a/arch/x86/include/asm/page_64_types.h
+++ b/arch/x86/include/asm/page_64_types.h
@@ -48,6 +48,5 @@
  * arch/x86/kernel/head_64.S), and it is mapped here:
  */
 #define KERNEL_IMAGE_SIZE	(512 * 1024 * 1024)
-#define KERNEL_IMAGE_START	_AC(0xffffffff80000000, UL)
 
 #endif /* _ASM_X86_PAGE_64_DEFS_H */
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index c5e403f..101ac1a9 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -144,10 +144,10 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	 * Build-time sanity checks on the kernel image and module
 	 * area mappings. (these are purely build-time and produce no code)
 	 */
-	BUILD_BUG_ON(MODULES_VADDR < KERNEL_IMAGE_START);
-	BUILD_BUG_ON(MODULES_VADDR-KERNEL_IMAGE_START < KERNEL_IMAGE_SIZE);
+	BUILD_BUG_ON(MODULES_VADDR < __START_KERNEL_map);
+	BUILD_BUG_ON(MODULES_VADDR - __START_KERNEL_map < KERNEL_IMAGE_SIZE);
 	BUILD_BUG_ON(MODULES_LEN + KERNEL_IMAGE_SIZE > 2*PUD_SIZE);
-	BUILD_BUG_ON((KERNEL_IMAGE_START & ~PMD_MASK) != 0);
+	BUILD_BUG_ON((__START_KERNEL_map & ~PMD_MASK) != 0);
 	BUILD_BUG_ON((MODULES_VADDR & ~PMD_MASK) != 0);
 	BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
 	BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/