x86, kexec: x86_64: add kexec jump support for x86_64

Impact: New major feature

This patch add kexec jump support for x86_64. More information about
kexec jump can be found in corresponding x86_32 support patch.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
index 0ceb6d19ed30..317ff1703d0b 100644
--- a/arch/x86/include/asm/kexec.h
+++ b/arch/x86/include/asm/kexec.h
@@ -9,13 +9,13 @@
 # define PAGES_NR               4
 #else
 # define PA_CONTROL_PAGE        0
-# define PA_TABLE_PAGE          1
-# define PAGES_NR               2
+# define VA_CONTROL_PAGE        1
+# define PA_TABLE_PAGE          2
+# define PA_SWAP_PAGE           3
+# define PAGES_NR               4
 #endif
 
-#ifdef CONFIG_X86_32
 # define KEXEC_CONTROL_CODE_MAX_SIZE    2048
-#endif
 
 #ifndef __ASSEMBLY__
 
@@ -136,10 +136,11 @@ relocate_kernel(unsigned long indirection_page,
                 unsigned int has_pae,
                 unsigned int preserve_context);
 #else
-NORET_TYPE void
+unsigned long
 relocate_kernel(unsigned long indirection_page,
                 unsigned long page_list,
-                unsigned long start_address) ATTRIB_NORET;
+                unsigned long start_address,
+                unsigned int preserve_context);
 #endif
 
 #define ARCH_HAS_KIMAGE_ARCH