[Xen-changelog] Add hypercall to allow domains to request that they be crashed.

[BitKeeper B. <ri...@su...>]

ChangeSet 1.1159.256.52, 2005/03/13 01:36:29+00:00, ia...@fr...

	Add hypercall to allow domains to request that they be crashed.
	Signed-off-by: ia...@xe...



 linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h |   16 ++++++++++++++++
 xen/common/domain.c                                  |    4 ++++
 xen/include/public/io/domain_controller.h            |    2 +-
 3 files changed, 21 insertions(+), 1 deletion(-)


diff -Nru a/linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h b/linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h	2005-03-13 05:02:39 -05:00
+++ b/linux-2.6.11-xen-sparse/include/asm-xen/hypervisor.h	2005-03-13 05:02:39 -05:00
@@ -289,6 +289,22 @@
     return ret;
 }
 
+static inline int
+HYPERVISOR_crash(
+    void)
+{
+    int ret;
+    unsigned long ign1;
+    __asm__ __volatile__ (
+        TRAP_INSTR
+        : "=a" (ret), "=b" (ign1)
+	: "0" (__HYPERVISOR_sched_op),
+	  "1" (SCHEDOP_shutdown | (SHUTDOWN_crash << SCHEDOP_reasonshift))
+        : "memory" );
+
+    return ret;
+}
+
 static inline long
 HYPERVISOR_set_timer_op(
     u64 timeout)
diff -Nru a/xen/common/domain.c b/xen/common/domain.c
--- a/xen/common/domain.c	2005-03-13 05:02:39 -05:00
+++ b/xen/common/domain.c	2005-03-13 05:02:39 -05:00
@@ -16,6 +16,7 @@
 #include <asm/shadow.h>
 #include <public/dom0_ops.h>
 #include <asm/domain_page.h>
+#include <public/io/domain_controller.h>
 
 /* Both these structures are protected by the domlist_lock. */
 rwlock_t domlist_lock = RW_LOCK_UNLOCKED;
@@ -167,6 +168,9 @@
             machine_restart(0);
         }
     }
+
+    if ( reason == SHUTDOWN_crash )
+        domain_crash();  /* we will not return */  
 
     current->shutdown_code = reason;
     set_bit(DF_SHUTDOWN, &current->flags);
diff -Nru a/xen/include/public/io/domain_controller.h b/xen/include/public/io/domain_controller.h
--- a/xen/include/public/io/domain_controller.h	2005-03-13 05:02:39 -05:00
+++ b/xen/include/public/io/domain_controller.h	2005-03-13 05:02:39 -05:00
@@ -19,7 +19,7 @@
 #define SHUTDOWN_poweroff   0  /* Domain exited normally. Clean up and kill. */
 #define SHUTDOWN_reboot     1  /* Clean up, kill, and then restart.          */
 #define SHUTDOWN_suspend    2  /* Clean up, save suspend info, kill.         */
-
+#define SHUTDOWN_crash      3  /* Tell controler we've crashed.              */
 
 /*
  * CONTROLLER MESSAGING INTERFACE.