From: kfraser@localhost.localdomain <kfraser@localhost.localdomain>
Date: Mon, 23 Oct 2006 12:10:24 +0000 (+0100)
Subject: [XEN] Fill in runstate_info when virtual address is registered,
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15585^2~17
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=cbeadbce20d281be1b5037ab31b5d5832ea329cf;p=xen.git

[XEN] Fill in runstate_info when virtual address is registered,
even when it is registered from the 'wrong' VCPU.
Signed-off-by: Keir Fraser <keir@xensource.com>
---

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 53d22417dc..3e0a2f82ae 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -378,6 +378,7 @@ arch_do_vcpu_op(
     case VCPUOP_register_runstate_memory_area:
     {
         struct vcpu_register_runstate_memory_area area;
+        struct vcpu_runstate_info runstate;
 
         rc = -EFAULT;
         if ( copy_from_guest(&area, arg, 1) )
@@ -390,8 +391,15 @@ arch_do_vcpu_op(
         v->runstate_guest = area.addr.v;
 
         if ( v == current )
+        {
             __copy_to_user(v->runstate_guest, &v->runstate,
                            sizeof(v->runstate));
+        }
+        else
+        {
+            vcpu_runstate_get(v, &runstate);
+            __copy_to_user(v->runstate_guest, &runstate, sizeof(runstate));
+        }
 
         break;
     }