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[Xen-devel] [patch 2/3] kexec: Add machine_kexec_get()

To: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [patch 2/3] kexec: Add machine_kexec_get()
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Wed, 27 Feb 2008 16:01:07 +0900
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxx>
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Introduce machine_kexec_get to allow architecture-specific handling of the
xen region. x86_64 is currently different to x86_32 and ia64. A subsequent
patch will make ia64 different from x86_32.

Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>

--- 

 xen/arch/ia64/xen/machine_kexec.c   |   15 +++++++++++++++
 xen/arch/powerpc/machine_kexec.c    |    6 ++++++
 xen/arch/x86/machine_kexec.c        |   10 ++++++++++
 xen/arch/x86/x86_32/Makefile        |    1 +
 xen/arch/x86/x86_32/machine_kexec.c |   33 +++++++++++++++++++++++++++++++++
 xen/arch/x86/x86_64/Makefile        |    1 +
 xen/arch/x86/x86_64/machine_kexec.c |   32 ++++++++++++++++++++++++++++++++
 xen/common/kexec.c                  |   18 ++++--------------
 xen/include/xen/kexec.h             |    1 +
 9 files changed, 103 insertions(+), 14 deletions(-)

Index: xen-unstable.hg/xen/arch/ia64/xen/machine_kexec.c
===================================================================
--- xen-unstable.hg.orig/xen/arch/ia64/xen/machine_kexec.c      2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/arch/ia64/xen/machine_kexec.c   2008-02-25 
17:37:10.000000000 +0900
@@ -162,6 +162,21 @@ void machine_reboot_kexec(xen_kexec_imag
        machine_kexec(image);
 }
 
+static int machine_kexec_get_xen(xen_kexec_range_t *range)
+{
+       range->start = virt_to_maddr(_start);
+       range->size = (unsigned long)xenheap_phys_end -
+                     (unsigned long)range->start;
+       return 0;
+}
+
+int machine_kexec_get(xen_kexec_range_t *range)
+{
+       if (range->range != KEXEC_RANGE_MA_XEN)
+               return -EINVAL;
+       return machine_kexec_get_xen(range);
+}
+
 /*
  * Local variables:
  * mode: C
Index: xen-unstable.hg/xen/arch/powerpc/machine_kexec.c
===================================================================
--- xen-unstable.hg.orig/xen/arch/powerpc/machine_kexec.c       2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/arch/powerpc/machine_kexec.c    2008-02-25 
17:11:39.000000000 +0900
@@ -24,6 +24,12 @@ void machine_kexec(xen_kexec_image_t *im
     printk("STUB: " __FILE__ ": %s: not implemented\n", __FUNCTION__);
 }
 
+int machine_kexec_get(xen_kexec_image_t *image)
+{
+    printk("STUB: " __FILE__ ": %s: not implemented\n", __FUNCTION__);
+    return -1;
+}
+
 /*
  * Local variables:
  * mode: C
Index: xen-unstable.hg/xen/common/kexec.c
===================================================================
--- xen-unstable.hg.orig/xen/common/kexec.c     2008-02-25 17:04:20.000000000 
+0900
+++ xen-unstable.hg/xen/common/kexec.c  2008-02-25 17:08:53.000000000 +0900
@@ -20,6 +20,7 @@
 #include <xen/spinlock.h>
 #include <xen/version.h>
 #include <xen/console.h>
+#include <xen/kexec.h>
 #include <public/elfnote.h>
 #include <xsm/xsm.h>
 
@@ -164,17 +165,6 @@ static int kexec_get_reserve(xen_kexec_r
     return 0;
 }
 
-static int kexec_get_xen(xen_kexec_range_t *range)
-{
-#ifdef CONFIG_X86_64
-    range->start = xenheap_phys_start;
-#else
-    range->start = virt_to_maddr(_start);
-#endif
-    range->size = (unsigned long)xenheap_phys_end - (unsigned 
long)range->start;
-    return 0;
-}
-
 static int kexec_get_cpu(xen_kexec_range_t *range)
 {
     int nr = range->nr;
@@ -228,12 +218,12 @@ static int kexec_get_range_internal(xen_
     case KEXEC_RANGE_MA_CRASH:
         ret = kexec_get_reserve(range);
         break;
-    case KEXEC_RANGE_MA_XEN:
-        ret = kexec_get_xen(range);
-        break;
     case KEXEC_RANGE_MA_CPU:
         ret = kexec_get_cpu(range);
         break;
+    default:
+        ret = machine_kexec_get(range);
+        break;
     }
 
     return ret;
Index: xen-unstable.hg/xen/arch/x86/machine_kexec.c
===================================================================
--- xen-unstable.hg.orig/xen/arch/x86/machine_kexec.c   2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/arch/x86/machine_kexec.c        2008-02-25 
17:11:55.000000000 +0900
@@ -24,6 +24,9 @@ typedef void (*relocate_new_kernel_t)(
                 unsigned long *page_list,
                 unsigned long start_address);
 
+extern int machine_kexec_get_xen(xen_kexec_range_t *range);
+
+
 int machine_kexec_load(int type, int slot, xen_kexec_image_t *image)
 {
     unsigned long prev_ma = 0;
@@ -135,6 +138,13 @@ void machine_kexec(xen_kexec_image_t *im
     }
 }
 
+int machine_kexec_get(xen_kexec_range_t *range)
+{
+       if (range->range != KEXEC_RANGE_MA_XEN)
+               return -EINVAL;
+       return machine_kexec_get_xen(range);
+}
+
 /*
  * Local variables:
  * mode: C
Index: xen-unstable.hg/xen/arch/x86/x86_32/Makefile
===================================================================
--- xen-unstable.hg.orig/xen/arch/x86/x86_32/Makefile   2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/arch/x86/x86_32/Makefile        2008-02-25 
17:08:10.000000000 +0900
@@ -4,6 +4,7 @@ obj-y += gpr_switch.o
 obj-y += mm.o
 obj-y += seg_fixup.o
 obj-y += traps.o
+obj-y += machine_kexec.o
 
 obj-$(crash_debug) += gdbstub.o
 
Index: xen-unstable.hg/xen/arch/x86/x86_32/machine_kexec.c
===================================================================
--- /dev/null   1970-01-01 00:00:00.000000000 +0000
+++ xen-unstable.hg/xen/arch/x86/x86_32/machine_kexec.c 2008-02-25 
17:08:10.000000000 +0900
@@ -0,0 +1,33 @@
+/******************************************************************************
+ * machine_kexec.c
+ *
+ * Xen port written by:
+ * - Simon 'Horms' Horman <horms@xxxxxxxxxxxx>
+ * - Magnus Damm <magnus@xxxxxxxxxxxxx>
+ */
+
+#ifndef CONFIG_COMPAT
+
+#include <xen/types.h>
+#include <xen/kernel.h>
+#include <asm/page.h>
+#include <public/kexec.h>
+
+int machine_kexec_get_xen(xen_kexec_range_t *range)
+{
+        range->start = virt_to_maddr(_start);
+        range->size = (unsigned long)xenheap_phys_end -
+                      (unsigned long)range->start;
+        return 0;
+}
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: xen-unstable.hg/xen/include/xen/kexec.h
===================================================================
--- xen-unstable.hg.orig/xen/include/xen/kexec.h        2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/include/xen/kexec.h     2008-02-25 17:08:10.000000000 
+0900
@@ -31,6 +31,7 @@ void kexec_disable_iosapic(void);
 void kexec_crash_save_cpu(void);
 crash_xen_info_t *kexec_crash_save_info(void);
 void machine_crash_shutdown(void);
+int machine_kexec_get(xen_kexec_range_t *range);
 
 #endif /* __XEN_KEXEC_H__ */
 
Index: xen-unstable.hg/xen/arch/x86/x86_64/Makefile
===================================================================
--- xen-unstable.hg.orig/xen/arch/x86/x86_64/Makefile   2008-02-25 
17:01:38.000000000 +0900
+++ xen-unstable.hg/xen/arch/x86/x86_64/Makefile        2008-02-25 
17:11:06.000000000 +0900
@@ -4,6 +4,7 @@ obj-y += entry.o
 obj-y += gpr_switch.o
 obj-y += mm.o
 obj-y += traps.o
+obj-y += machine_kexec.o
 
 obj-$(crash_debug)   += gdbstub.o
 obj-$(CONFIG_COMPAT) += compat.o
Index: xen-unstable.hg/xen/arch/x86/x86_64/machine_kexec.c
===================================================================
--- /dev/null   1970-01-01 00:00:00.000000000 +0000
+++ xen-unstable.hg/xen/arch/x86/x86_64/machine_kexec.c 2008-02-25 
17:08:10.000000000 +0900
@@ -0,0 +1,32 @@
+/******************************************************************************
+ * machine_kexec.c
+ *
+ * Xen port written by:
+ * - Simon 'Horms' Horman <horms@xxxxxxxxxxxx>
+ * - Magnus Damm <magnus@xxxxxxxxxxxxx>
+ */
+
+#ifndef CONFIG_COMPAT
+
+#include <xen/types.h>
+#include <asm/page.h>
+#include <public/kexec.h>
+
+int machine_kexec_get_xen(xen_kexec_range_t *range)
+{
+        range->start = xenheap_phys_start;
+        range->size = (unsigned long)xenheap_phys_end -
+                      (unsigned long)range->start;
+        return 0;
+}
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */

-- 

-- 
Horms


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