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| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-12-07 02:14:04 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:04 +0100 |
| commit | 968de4f02621db35b8ae5239c8cfc6664fb872d8 (patch) | |
| tree | 9388da7f18f9511e1bbfeaf934cba8dbc696e9f4 /include/linux/screen_info.h | |
| parent | fd593d12770d4a0d1ff095d44b96436c18479ee8 (diff) | |
| download | linux-968de4f02621db35b8ae5239c8cfc6664fb872d8.tar.gz linux-968de4f02621db35b8ae5239c8cfc6664fb872d8.tar.bz2 linux-968de4f02621db35b8ae5239c8cfc6664fb872d8.zip | |
[PATCH] i386: Relocatable kernel support
This patch modifies the i386 kernel so that if CONFIG_RELOCATABLE is
selected it will be able to be loaded at any 4K aligned address below
1G. The technique used is to compile the decompressor with -fPIC and
modify it so the decompressor is fully relocatable. For the main
kernel relocations are generated. Resulting in a kernel that is relocatable
with no runtime overhead and no need to modify the source code.
A reserved 32bit word in the parameters has been assigned
to serve as a stack so we figure out where are running.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/linux/screen_info.h')
| -rw-r--r-- | include/linux/screen_info.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/screen_info.h b/include/linux/screen_info.h index 2925e66a6732..b02308ee7667 100644 --- a/include/linux/screen_info.h +++ b/include/linux/screen_info.h @@ -42,7 +42,8 @@ struct screen_info { u16 pages; /* 0x32 */ u16 vesa_attributes; /* 0x34 */ u32 capabilities; /* 0x36 */ - /* 0x3a -- 0x3f reserved for future expansion */ + /* 0x3a -- 0x3b reserved for future expansion */ + /* 0x3c -- 0x3f micro stack for relocatable kernels */ }; extern struct screen_info screen_info; |