From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1NUNvz-0000Bh-GP
	for qemu-devel@nongnu.org; Mon, 11 Jan 2010 12:20:07 -0500
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1NUNvu-0008VC-7F
	for qemu-devel@nongnu.org; Mon, 11 Jan 2010 12:20:06 -0500
Received: from [199.232.76.173] (port=58004 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1NUNvt-0008Un-PQ
	for qemu-devel@nongnu.org; Mon, 11 Jan 2010 12:20:01 -0500
Received: from mx1.redhat.com ([209.132.183.28]:38457)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <mst@redhat.com>) id 1NUNvs-0007u7-TM
	for qemu-devel@nongnu.org; Mon, 11 Jan 2010 12:20:01 -0500
Date: Mon, 11 Jan 2010 19:17:03 +0200
From: "Michael S. Tsirkin" <mst@redhat.com>
Message-ID: <20100111171703.GC11936@redhat.com>
References: <cover.1263230079.git.mst@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <cover.1263230079.git.mst@redhat.com>
Subject: [Qemu-devel] [PATCH-RFC 02/13] kvm: add API to set ioeventfd
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Anthony Liguori <anthony@codemonkey.ws>, qemu-devel@nongnu.org

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 kvm-all.c |   24 ++++++++++++++++++++++++
 kvm.h     |    3 +++
 2 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/kvm-all.c b/kvm-all.c
index a312654..aa00119 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1113,3 +1113,27 @@ void kvm_remove_all_breakpoints(CPUState *current_env)
 {
 }
 #endif /* !KVM_CAP_SET_GUEST_DEBUG */
+
+#ifdef KVM_IOEVENTFD
+int kvm_set_ioeventfd(uint16_t addr, uint16_t data, int fd, bool assigned)
+{
+    struct kvm_ioeventfd kick = {
+        .datamatch = data,
+        .addr = addr,
+        .len = 2,
+        .flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO,
+        .fd = fd,
+    };
+    if (!assigned)
+        kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
+    int r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
+    if (r < 0)
+        return r;
+    return 0;
+}
+#else
+int kvm_set_ioeventfd(uint16_t data, uint16_t addr, int fd, bool assigned)
+{
+    return -ENOSYS;
+}
+#endif
diff --git a/kvm.h b/kvm.h
index 672d511..2d723b8 100644
--- a/kvm.h
+++ b/kvm.h
@@ -14,6 +14,7 @@
 #ifndef QEMU_KVM_H
 #define QEMU_KVM_H
 
+#include <stdbool.h>
 #include "config.h"
 #include "qemu-queue.h"
 
@@ -131,4 +132,6 @@ static inline void cpu_synchronize_state(CPUState *env)
     }
 }
 
+int kvm_set_ioeventfd(uint16_t addr, uint16_t data, int fd, bool assigned);
+
 #endif
-- 
1.6.6.rc1.43.gf55cc