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authorJeremy Fitzhardinge <jeremy@goop.org>2008-06-25 00:19:18 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-08 13:11:06 +0200
commitf97013fd8f17120182aa247f360e4d2069a9db9c (patch)
tree70ed1ddbc6dac614eb71ec8ddb830c8022e3cac3 /arch
parent408011759cc8ff7f89505e8398cec0ccf67b5afa (diff)
x86, 64-bit: split x86_64_start_kernel
Split x86_64_start_kernel() into two pieces: The first essentially cleans up after head_64.S. It clears the bss, zaps low identity mappings, sets up some early exception handlers. The second part preserves the boot data, reserves the kernel's text/data/bss, pagetables and ramdisk, and then starts the kernel proper. This split is so that Xen can call the second part to do the set up it needs done. It doesn't need any of the first part setups, because it doesn't boot via head_64.S, and its redundant or actively damaging. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/head64.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index c970929bb15..f684e3b3de4 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -108,6 +108,11 @@ void __init x86_64_start_kernel(char * real_mode_data)
early_printk("Kernel really alive\n");
+ x86_64_start_reservations(real_mode_data);
+}
+
+void __init x86_64_start_reservations(char *real_mode_data)
+{
copy_bootdata(__va(real_mode_data));
reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");