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x86: Move bios page reserve early to head32/64.c

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So prepare to make one more clean of early_res.c.

-v2: don't need to reserve first page in early_res
     because we already mark that in e820 as reserved already.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-20-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu 2010-02-10 01:20:23 -08:00 committed by H. Peter Anvin
parent 9bdac91424
commit db8f77c889
2 changed files with 12 additions and 20 deletions
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22
arch/x86/kernel/e820.c
View File

@ -743,29 +743,11 @@ struct early_res {
char name[15];
char overlap_ok;
};
static struct early_res early_res_x[MAX_EARLY_RES_X] __initdata = {
{ 0, PAGE_SIZE, "BIOS data page", 1 }, /* BIOS data page */
#if defined(CONFIG_X86_32) && defined(CONFIG_X86_TRAMPOLINE)
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
{ PAGE_SIZE, PAGE_SIZE + PAGE_SIZE, "EX TRAMPOLINE", 1 },
#endif
{}
};
static struct early_res early_res_x[MAX_EARLY_RES_X] __initdata;
static int max_early_res __initdata = MAX_EARLY_RES_X;
static struct early_res *early_res __initdata = &early_res_x[0];
static int early_res_count __initdata =
#ifdef CONFIG_X86_32
2
#else
1
#endif
;
static int early_res_count __initdata;
static int __init find_overlapped_early(u64 start, u64 end)
{

10
arch/x86/kernel/head32.c
View File

@ -29,6 +29,16 @@ static void __init i386_default_early_setup(void)
void __init i386_start_kernel(void)
{
#ifdef CONFIG_X86_TRAMPOLINE
/*
* But first pinch a few for the stack/trampoline stuff
* FIXME: Don't need the extra page at 4K, but need to fix
* trampoline before removing it. (see the GDT stuff)
*/
reserve_early_overlap_ok(PAGE_SIZE, PAGE_SIZE + PAGE_SIZE,
"EX TRAMPOLINE");
#endif
reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS");
#ifdef CONFIG_BLK_DEV_INITRD