# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1186648381 -32400
# Node ID b28786127bf9a973f8b8ac1f47ec469012c1d168
# Parent  840b9df48b6a4f0f569963dba01885bde2946b6b
prevent soft lockup when domain destroy. linux part.
repeat domain destroy hypercall until success.
PATCHNAME: prevent_soft_lockup_linux_part

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 840b9df48b6a -r b28786127bf9 arch/ia64/xen/xcom_privcmd.c
--- a/arch/ia64/xen/xcom_privcmd.c	Tue Aug 07 09:37:41 2007 +0100
+++ b/arch/ia64/xen/xcom_privcmd.c	Thu Aug 09 17:33:01 2007 +0900
@@ -305,7 +305,13 @@ xencomm_privcmd_domctl(privcmd_hypercall
 		return ret;
 	}
 
-	ret = xencomm_arch_hypercall_domctl (op_desc);
+	ret = xencomm_arch_hypercall_domctl(op_desc);
+	if (kern_op.cmd == XEN_DOMCTL_destroydomain) {
+		while (ret == -EAGAIN) {
+			schedule(); /* prevent softlock up message */
+			ret = xencomm_arch_hypercall_domctl(op_desc);
+		}
+	}
 
 	/* FIXME: should we restore the handle?  */
 	if (copy_to_user(user_op, &kern_op, sizeof(xen_domctl_t)))