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>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index 5051b94c9069..adedeef1dedc 100644
--- 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