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| author | Vivek Goyal <vgoyal@in.ibm.com> | 2006-10-21 18:37:03 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-10-21 18:37:03 +0200 |
| commit | dbaab49f92ff6ae6255762a948375e4036cbdbd2 (patch) | |
| tree | 4cd5e6885fff895b53716eb5d333d7d1e024925a | |
| parent | 84f404f695b16bd142c8dd9910d5a398f54fb044 (diff) | |
| download | blackbird-obmc-linux-dbaab49f92ff6ae6255762a948375e4036cbdbd2.tar.gz blackbird-obmc-linux-dbaab49f92ff6ae6255762a948375e4036cbdbd2.zip | |
[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>
| -rw-r--r-- | arch/x86_64/kernel/vmlinux.lds.S | 3 |
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 b9df2ab6529f..1283614c9b24 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) { |
