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authorH. Peter Anvin <hpa@zytor.com>2012-06-16 21:47:37 -0700
committerH. Peter Anvin <hpa@zytor.com>2012-06-17 10:51:01 -0700
commit650513979a437c32d7a0a84f0ed952a55bbb5583 (patch)
treeb831bcbfdfce6abb31573e67669272f368626b5b /arch/x86/realmode/rm/header.S
parentcfaf025112d3856637ff34a767ef785ef5cf2ca9 (diff)
x86-64, reboot: Allow reboot=bios and reboot-cpu override on x86-64
With the revamped realmode trampoline code, it is trivial to extend support for reboot=bios to x86-64. Furthermore, while we are at it, remove the restriction that only we can only override the reboot CPU on 32 bits. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Link: http://lkml.kernel.org/n/tip-jopx7y6g6dbcx4tpal8q0jlr@git.kernel.org
Diffstat (limited to 'arch/x86/realmode/rm/header.S')
-rw-r--r--arch/x86/realmode/rm/header.S4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
index fadf48378ada..a28221d94e69 100644
--- a/arch/x86/realmode/rm/header.S
+++ b/arch/x86/realmode/rm/header.S
@@ -6,6 +6,7 @@
#include <linux/linkage.h>
#include <asm/page_types.h>
+#include <asm/segment.h>
#include "realmode.h"
@@ -28,8 +29,9 @@ GLOBAL(real_mode_header)
.long pa_wakeup_header
#endif
/* APM/BIOS reboot */
-#ifdef CONFIG_X86_32
.long pa_machine_real_restart_asm
+#ifdef CONFIG_X86_64
+ .long __KERNEL32_CS
#endif
END(real_mode_header)