linux-kernel - [RFC PATCH 1/5] elf: add livepatch-specific elf constants

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Date:	Mon,  9 Nov 2015 23:45:51 -0500
From:	Jessica Yu <jeyu@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Seth Jennings <sjenning@...hat.com>,
	Jiri Kosina <jikos@...nel.org>,
	Vojtech Pavlik <vojtech@...e.com>,
	Miroslav Benes <mbenes@...e.cz>
Cc:	linux-api@...r.kernel.org, live-patching@...r.kernel.org,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	Jessica Yu <jeyu@...hat.com>
Subject: [RFC PATCH 1/5] elf: add livepatch-specific elf constants

Add livepatch elf reloc section flag, livepatch symbol bind
and section index

Signed-off-by: Jessica Yu <jeyu@...hat.com>
---
 include/uapi/linux/elf.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 71e1d0e..967ce1b 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -118,6 +118,7 @@ typedef __s64	Elf64_Sxword;
 #define STB_LOCAL  0
 #define STB_GLOBAL 1
 #define STB_WEAK   2
+#define STB_LIVEPATCH_EXT 11
 
 #define STT_NOTYPE  0
 #define STT_OBJECT  1
@@ -286,6 +287,7 @@ typedef struct elf64_phdr {
 #define SHF_ALLOC	0x2
 #define SHF_EXECINSTR	0x4
 #define SHF_MASKPROC	0xf0000000
+#define SHF_RELA_LIVEPATCH  0x4000000
 
 /* special section indexes */
 #define SHN_UNDEF	0
@@ -295,6 +297,7 @@ typedef struct elf64_phdr {
 #define SHN_ABS		0xfff1
 #define SHN_COMMON	0xfff2
 #define SHN_HIRESERVE	0xffff
+#define SHN_LIVEPATCH 0xff21
  
 typedef struct elf32_shdr {
   Elf32_Word	sh_name;
-- 
2.4.3

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