From: Joao Martins <joao.m.martins@oracle.com>
Date: Thu, 6 Sep 2018 10:52:01 +0000 (-0400)
Subject: i386/xen: handle EVTCHNOP_bind_vcpu
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f484d8d7788b7871430eab9636998114ff04fa83;p=users%2Fdwmw2%2Fqemu.git

i386/xen: handle EVTCHNOP_bind_vcpu

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
---

diff --git a/target/i386/xen.c b/target/i386/xen.c
index 8f523b58b8..1916ddcb98 100644
--- a/target/i386/xen.c
+++ b/target/i386/xen.c
@@ -748,6 +748,9 @@ static int kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, X86CPU *cpu,
     case EVTCHNOP_alloc_unbound:
         err = kvm_xen_evtchn_alloc_unbound(cpu, eop);
         break;
+    case EVTCHNOP_bind_vcpu:
+        err = kvm_xen_evtchn_bind_vcpu(cpu, eop);
+        break;
     case EVTCHNOP_close:
         err = kvm_xen_evtchn_close(cpu, eop);
         break;
diff --git a/target/i386/xen_evtchn.c b/target/i386/xen_evtchn.c
index 4e19bbc554..6fadd37e7f 100644
--- a/target/i386/xen_evtchn.c
+++ b/target/i386/xen_evtchn.c
@@ -432,6 +432,29 @@ int kvm_xen_evtchn_alloc_unbound(X86CPU *cpu, void *arg)
     return 0;
 }
 
+int kvm_xen_evtchn_bind_vcpu(X86CPU *cpu, void *arg)
+{
+    struct evtchn_bind_vcpu bind_vcpu;
+    struct XenEvtChn *evtchn;
+    CPUState *dest;
+
+    memcpy(&bind_vcpu, arg, sizeof(bind_vcpu));
+
+    dest = qemu_get_cpu(bind_vcpu.vcpu);
+    if (!dest) {
+        return -EINVAL;
+    }
+
+    evtchn = evtchn_from_port(bind_vcpu.port);
+    if (!evtchn) {
+        return -ENOENT;
+    }
+
+    evtchn->notify_vcpu_id = bind_vcpu.vcpu;
+
+    return 0;
+}
+
 int kvm_xen_evtchn_close(X86CPU *cpu, void *arg)
 {
     struct evtchn_close close;
diff --git a/target/i386/xen_evtchn.h b/target/i386/xen_evtchn.h
index dce83d112e..97b5d6f097 100644
--- a/target/i386/xen_evtchn.h
+++ b/target/i386/xen_evtchn.h
@@ -20,6 +20,7 @@ int kvm_xen_evtchn_init(XenState *xen_state);
 int kvm_xen_evtchn_bind_ipi(X86CPU *cpu, void *arg);
 int kvm_xen_evtchn_bind_virq(X86CPU *cpu, void *arg);
 int kvm_xen_evtchn_bind_interdomain(X86CPU *cpu, void *arg);
+int kvm_xen_evtchn_bind_vcpu(X86CPU *cpu, void *arg);
 int kvm_xen_evtchn_alloc_unbound(X86CPU *cpu, void *arg);
 int kvm_xen_evtchn_close(X86CPU *cpu, void *arg);
 int kvm_xen_evtchn_unmask(X86CPU *cpu, void *arg);