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

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>

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 90a8529..4004f10 100644 (file)
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -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)
 {

diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index 5051b94..adedeef 100644 (file)
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -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