From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 20 Nov 2008 14:21:17 +0000 (+0000)
Subject: x86: freeze non-current vCPUs of dom0 before entering S5
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14043^2~9
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22?a=commitdiff_plain;h=a5b98f7f3493f139163d906accb673d20e6cdff8;p=xen.git

x86: freeze non-current vCPUs of dom0 before entering S5

Signed-off-by: Jan Beulich <jbeulich@novell.com>
---

diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c
index 2eb6860070..ccad2ea5ee 100644
--- a/xen/arch/x86/acpi/power.c
+++ b/xen/arch/x86/acpi/power.c
@@ -77,19 +77,47 @@ static void device_power_up(void)
 static void freeze_domains(void)
 {
     struct domain *d;
+    struct vcpu *v;
 
+    rcu_read_lock(&domlist_read_lock);
     for_each_domain ( d )
-        if ( d->domain_id != 0 )
+    {
+        switch ( d->domain_id )
+        {
+        case 0:
+            for_each_vcpu ( d, v )
+                if ( v != current )
+                    vcpu_pause(v);
+            break;
+        default:
             domain_pause(d);
+            break;
+        }
+    }
+    rcu_read_unlock(&domlist_read_lock);
 }
 
 static void thaw_domains(void)
 {
     struct domain *d;
+    struct vcpu *v;
 
+    rcu_read_lock(&domlist_read_lock);
     for_each_domain ( d )
-        if ( d->domain_id != 0 )
+    {
+        switch ( d->domain_id )
+        {
+        case 0:
+            for_each_vcpu ( d, v )
+                if ( v != current )
+                    vcpu_unpause(v);
+            break;
+        default:
             domain_unpause(d);
+            break;
+        }
+    }
+    rcu_read_unlock(&domlist_read_lock);
 }
 
 static void acpi_sleep_prepare(u32 state)