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authorVivek Goyal <vgoyal@in.ibm.com>2006-10-21 18:37:03 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-10-21 18:37:03 +0200
commitdbaab49f92ff6ae6255762a948375e4036cbdbd2 (patch)
tree4cd5e6885fff895b53716eb5d333d7d1e024925a /arch/x86_64
parent84f404f695b16bd142c8dd9910d5a398f54fb044 (diff)
[PATCH] x86-64: Overlapping program headers in physical addr space fix
o A recent change to vmlinux.ld.S file broke kexec as now resulting vmlinux program headers are overlapping in physical address space. o Now all the vsyscall related sections are placed after data and after that mostly init data sections are placed. To avoid physical overlap among phdrs, there are three possible solutions. - Place vsyscall sections also in data phdrs instead of user - move vsyscal sections after init data in bss. - create another phdrs say data.init and move all the sections after vsyscall into this new phdr. o This patch implements the third solution. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Magnus Damm <magnus@valinux.co.jp> Cc: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/vmlinux.lds.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S
index b9df2ab6529..1283614c9b2 100644
--- a/arch/x86_64/kernel/vmlinux.lds.S
+++ b/arch/x86_64/kernel/vmlinux.lds.S
@@ -17,6 +17,7 @@ PHDRS {
text PT_LOAD FLAGS(5); /* R_E */
data PT_LOAD FLAGS(7); /* RWE */
user PT_LOAD FLAGS(7); /* RWE */
+ data.init PT_LOAD FLAGS(7); /* RWE */
note PT_NOTE FLAGS(4); /* R__ */
}
SECTIONS
@@ -131,7 +132,7 @@ SECTIONS
. = ALIGN(8192); /* init_task */
.data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
*(.data.init_task)
- } :data
+ }:data.init
. = ALIGN(4096);
.data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {