[PATCH 16/36] x86: move bios page reserve early to head32/64.c

Yinghai Lu
2010-01-21T06:29:28Z

so prepare to make one more clean early_res.c

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/kernel/e820.c | 22 ++--------------------
arch/x86/kernel/head32.c | 12 ++++++++++++
arch/x86/kernel/head64.c | 2 ++
3 files changed, 16 insertions(+), 20 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index bd6a361..b7681e3 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -735,29 +735,11 @@ 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)
{
diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index 5051b94..2e13544 100644
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -29,6 +29,18 @@ static void __init i386_default_early_setup(void)

void __init i386_start_kernel(void)
{
+ reserve_early_overlap_ok(0, PAGE_SIZE, "BIOS data page");
+
+#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
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index b5a9896..452b7c4 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -98,6 +98,8 @@ void __init x86_64_start_reservations(char *real_mode_data)
{
copy_bootdata(__va(real_mode_data));

+ reserve_early_overlap_ok(0, PAGE_SIZE, "BIOS data page");
+
reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS");

#ifdef CONFIG_BLK_DEV_INITRD
--
1.6.4.2