[Xen-changelog] [xen-unstable] Implement domctl_sendtrigger_nmi for x86 hvm.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1184330948 -3600
# Node ID 8b4518a6f81547ccb70cc05665ae086a4638a29c
# Parent  0aa2a954a6d13578627ec4d0558786b77a8c8afc
Implement domctl_sendtrigger_nmi for x86 hvm.

This patch implements DOMCTL_SENDTRIGGER_NMI hypercall for x86 hvm
domains. We can manually inject NMI into a domain by using
'xm trigger [domain] nmi [vcpu]'.

Signed-off-by: Yosuke Iwamatsu <y-iwamatsu@xxxxxxxxxxxxx>
---
 xen/arch/x86/domctl.c |   40 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 40 insertions(+)

diff -r 0aa2a954a6d1 -r 8b4518a6f815 xen/arch/x86/domctl.c
--- a/xen/arch/x86/domctl.c     Fri Jul 13 13:46:49 2007 +0100
+++ b/xen/arch/x86/domctl.c     Fri Jul 13 13:49:08 2007 +0100
@@ -427,6 +427,46 @@ long arch_do_domctl(
     }
     break;
 
+    case XEN_DOMCTL_sendtrigger:
+    {
+        struct domain *d;
+        struct vcpu *v;
+
+        ret = -ESRCH;
+        if ( (d = rcu_lock_domain_by_id(domctl->domain)) == NULL )
+            break;
+
+        ret = -EINVAL;
+        if ( domctl->u.sendtrigger.vcpu >= MAX_VIRT_CPUS )
+            goto sendtrigger_out;
+
+        ret = -ESRCH;
+        if ( (v = d->vcpu[domctl->u.sendtrigger.vcpu]) == NULL )
+            goto sendtrigger_out;
+
+        switch ( domctl->u.sendtrigger.trigger )
+        {
+        case XEN_DOMCTL_SENDTRIGGER_NMI:
+        {
+            ret = -ENOSYS;
+            if ( !is_hvm_domain(d) )
+                break;
+
+            ret = 0;
+            if ( !test_and_set_bool(v->arch.hvm_vcpu.nmi_pending) )
+                vcpu_kick(v);
+        }
+        break;
+
+        default:
+            ret = -ENOSYS;
+        }
+
+    sendtrigger_out:
+        rcu_unlock_domain(d);
+    }
+    break;
+
     default:
         ret = -ENOSYS;
         break;

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