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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-02-27 22:27:38 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-03-15 01:23:47 +0100 |
| commit | ccf3fe02e35f4abca2589f99022cc25084bbd8ae (patch) | |
| tree | 3bcf329116b8c689b4da1bb1a0d87bb587d3f3c7 /arch/x86/include/asm/setup.h | |
| parent | x86: move brk initialization out of #ifdef CONFIG_BLK_DEV_INITRD (diff) | |
| download | linux-ccf3fe02e35f4abca2589f99022cc25084bbd8ae.tar.xz linux-ccf3fe02e35f4abca2589f99022cc25084bbd8ae.zip | |
x86-32: use brk segment for allocating initial kernel pagetable
Impact: use new interface instead of previous ad hoc implementation
Rather than having special purpose init_pg_table_start/end variables
to delimit the kernel pagetable built by head_32.S, just use the brk
mechanism to extend the bss for the new pagetable.
This patch removes init_pg_table_start/end and pg0, defines __brk_base
(which is page-aligned and immediately follows _end), initializes
the brk region to start there, and uses it for the 32-bit pagetable.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/setup.h')
| -rw-r--r-- | arch/x86/include/asm/setup.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index 45454f3fa121..366d36639940 100644 --- a/arch/x86/include/asm/setup.h +++ b/arch/x86/include/asm/setup.h @@ -109,9 +109,6 @@ void *extend_brk(size_t size, size_t align); void __init i386_start_kernel(void); extern void probe_roms(void); -extern unsigned long init_pg_tables_start; -extern unsigned long init_pg_tables_end; - #else void __init x86_64_start_kernel(char *real_mode); void __init x86_64_start_reservations(char *real_mode_data); |