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authorJeremy Fitzhardinge <jeremy@goop.org>2007-05-02 13:27:12 -0400
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 13:27:12 -0400
commitd4f7a2c18e59e0304a1c733589ce14fc02fec1bd (patch)
tree99c64275f7eb50925aad71a74ae083ececdbb795 /include/linux
parenta6c4e076ee4c1ea670e4faa55814e63dd08e3f29 (diff)
[PATCH] i386: Relocate VDSO ELF headers to match mapped location with COMPAT_VDSO
Some versions of libc can't deal with a VDSO which doesn't have its ELF headers matching its mapped address. COMPAT_VDSO maps the VDSO at a specific system-wide fixed address. Previously this was all done at build time, on the grounds that the fixed VDSO address is always at the top of the address space. However, a hypervisor may reserve some of that address space, pushing the fixmap address down. This patch does the adjustment dynamically at runtime, depending on the runtime location of the VDSO fixmap. [ Patch has been through several hands: Jan Beulich wrote the orignal version; Zach reworked it, and Jeremy converted it to relocate phdrs as well as sections. ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Zachary Amsden <zach@vmware.com> Cc: "Jan Beulich" <JBeulich@novell.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Roland McGrath <roland@redhat.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/elf.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/elf.h b/include/linux/elf.h
index 60713e6ea297..8b17ffe222c4 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -83,6 +83,23 @@ typedef __s64 Elf64_Sxword;
83#define DT_DEBUG 21 83#define DT_DEBUG 21
84#define DT_TEXTREL 22 84#define DT_TEXTREL 22
85#define DT_JMPREL 23 85#define DT_JMPREL 23
86#define DT_ENCODING 32
87#define OLD_DT_LOOS 0x60000000
88#define DT_LOOS 0x6000000d
89#define DT_HIOS 0x6ffff000
90#define DT_VALRNGLO 0x6ffffd00
91#define DT_VALRNGHI 0x6ffffdff
92#define DT_ADDRRNGLO 0x6ffffe00
93#define DT_ADDRRNGHI 0x6ffffeff
94#define DT_VERSYM 0x6ffffff0
95#define DT_RELACOUNT 0x6ffffff9
96#define DT_RELCOUNT 0x6ffffffa
97#define DT_FLAGS_1 0x6ffffffb
98#define DT_VERDEF 0x6ffffffc
99#define DT_VERDEFNUM 0x6ffffffd
100#define DT_VERNEED 0x6ffffffe
101#define DT_VERNEEDNUM 0x6fffffff
102#define OLD_DT_HIOS 0x6fffffff
86#define DT_LOPROC 0x70000000 103#define DT_LOPROC 0x70000000
87#define DT_HIPROC 0x7fffffff 104#define DT_HIPROC 0x7fffffff
88 105