[PATCH] kexec: some #include adjustments

[Jan Beulich <jbeulich@xxxxxxxx>]

In the context of working on x86's elf_core_save_regs() I noticed there
were far more source files getting rebuilt than I would have expected.
While the main offender looks to have been fixmap.h including kexec.h,
also drop use of elfcore.h from kexec.h.

While adjusting machine_kexec.c also replace use of guest_access.h by
domain_page.h.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/machine_kexec.c
+++ b/xen/arch/x86/machine_kexec.c
@@ -16,8 +16,9 @@
  */
 
 #include <xen/types.h>
+#include <xen/domain_page.h>
+#include <xen/elfstructs.h>
 #include <xen/kexec.h>
-#include <xen/guest_access.h>
 #include <asm/fixmap.h>
 #include <asm/hpet.h>
 #include <asm/page.h>
--- a/xen/common/kexec.c
+++ b/xen/common/kexec.c
@@ -10,6 +10,7 @@
 #include <xen/lib.h>
 #include <xen/acpi.h>
 #include <xen/ctype.h>
+#include <xen/elfcore.h>
 #include <xen/errno.h>
 #include <xen/guest_access.h>
 #include <xen/param.h>
--- a/xen/include/asm-x86/fixmap.h
+++ b/xen/include/asm-x86/fixmap.h
@@ -21,7 +21,6 @@
 
 #include <xen/acpi.h>
 #include <xen/pfn.h>
-#include <xen/kexec.h>
 #include <asm/apicdef.h>
 #include <asm/msi.h>
 #include <acpi/apei.h>
--- a/xen/include/xen/elfcore.h
+++ b/xen/include/xen/elfcore.h
@@ -56,7 +56,7 @@ typedef struct
     int pr_fpvalid;              /* True if math co-processor being used.  */
 } ELF_Prstatus;
 
-typedef struct {
+typedef struct crash_xen_info {
     unsigned long xen_major_version;
     unsigned long xen_minor_version;
     unsigned long xen_extra_version;
--- a/xen/include/xen/kexec.h
+++ b/xen/include/xen/kexec.h
@@ -5,7 +5,6 @@
 
 #include <public/kexec.h>
 
-#include <xen/elfcore.h>
 #include <xen/kimage.h>
 
 typedef struct xen_kexec_reserve {
@@ -51,7 +50,7 @@ void machine_reboot_kexec(struct kexec_i
 void machine_kexec(struct kexec_image *image);
 void kexec_crash(void);
 void kexec_crash_save_cpu(void);
-crash_xen_info_t *kexec_crash_save_info(void);
+struct crash_xen_info *kexec_crash_save_info(void);
 void machine_crash_shutdown(void);
 int machine_kexec_get(xen_kexec_range_t *range);
 int machine_kexec_get_xen(xen_kexec_range_t *range);