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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/kernel/setup.c | |
| 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/kernel/setup.c')
| -rw-r--r-- | arch/x86/kernel/setup.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index b8329029c150..3ac2aa7b9eaf 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -161,12 +161,6 @@ static struct resource bss_resource = { #ifdef CONFIG_X86_32 -/* This value is set up by the early boot code to point to the value - immediately after the boot time page tables. It contains a *physical* - address, and must not be in the .bss segment! */ -unsigned long init_pg_tables_start __initdata = ~0UL; -unsigned long init_pg_tables_end __initdata = ~0UL; - static struct resource video_ram_resource = { .name = "Video RAM area", .start = 0xa0000, |