From: David Woodhouse <dwmw@amazon.co.uk>
Date: Sun, 1 Jan 2023 23:49:25 +0000 (+0000)
Subject: hw/xen: Add emulated evtchn ops
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1b2f0a6afbd2d03814e18f78b082cf9da9897f30;p=people%2Fpauldu%2Fqemu.git

hw/xen: Add emulated evtchn ops

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---

diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c
index 17a88823d6..95349f16d4 100644
--- a/hw/i386/kvm/xen_evtchn.c
+++ b/hw/i386/kvm/xen_evtchn.c
@@ -33,6 +33,7 @@
 #include "hw/pci/msi.h"
 #include "hw/pci/msix.h"
 #include "hw/irq.h"
+#include "hw/xen/xen_backend_ops.h"
 
 #include "xen_evtchn.h"
 #include "xen_overlay.h"
@@ -277,6 +278,17 @@ static const TypeInfo xen_evtchn_info = {
     .class_init    = xen_evtchn_class_init,
 };
 
+static struct evtchn_backend_ops emu_evtchn_backend_ops = {
+    .open = xen_be_evtchn_open,
+    .bind_interdomain = xen_be_evtchn_bind_interdomain,
+    .unbind = xen_be_evtchn_unbind,
+    .close = xen_be_evtchn_close,
+    .get_fd = xen_be_evtchn_fd,
+    .notify = xen_be_evtchn_notify,
+    .unmask = xen_be_evtchn_unmask,
+    .pending = xen_be_evtchn_pending,
+};
+
 static void gsi_assert_bh(void *opaque)
 {
     struct vcpu_info *vi = kvm_xen_get_vcpu_info_hva(0);
@@ -317,6 +329,9 @@ void xen_evtchn_create(void)
     s->nr_pirq_inuse_words = DIV_ROUND_UP(s->nr_pirqs, 64);
     s->pirq_inuse_bitmap = g_new0(uint64_t, s->nr_pirq_inuse_words);
     s->pirq = g_new0(struct pirq_info, s->nr_pirqs);
+
+    /* Set event channel functions for backend drivers to use */
+    xen_evtchn_ops = &emu_evtchn_backend_ops;
 }
 
 void xen_evtchn_connect_gsis(qemu_irq *system_gsis)