qemu-kvm/kvm-vfio-ccw-Move-VFIODevice-initializations-in-vfio_ccw.patch

From 2ef1c050722115247962e3cd4d8fcf73727e597e Mon Sep 17 00:00:00 2001
From: Zhenzhong Duan <zhenzhong.duan@intel.com>
Date: Tue, 21 Nov 2023 16:44:24 +0800
Subject: [PATCH 045/101] vfio/ccw: Move VFIODevice initializations in
 vfio_ccw_instance_init
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RH-Author: Eric Auger <eric.auger@redhat.com>
RH-MergeRequest: 211: IOMMUFD backend backport
RH-Jira: RHEL-19302 RHEL-21057
RH-Acked-by: Cédric Le Goater <clg@redhat.com>
RH-Acked-by: Sebastian Ott <sebott@redhat.com>
RH-Commit: [44/67] 3345ed58f491aba8fd51bcc172af267ae53e6c8c (eauger1/centos-qemu-kvm)

Some of the VFIODevice initializations is in vfio_ccw_realize,
move all of them in vfio_ccw_instance_init.

No functional change intended.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit c12b55ad6f9d3b4792b590e9211bd7319e4a2d70)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 hw/vfio/ccw.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index 2afdf17dbe..6305a4c1b8 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -594,20 +594,6 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    vbasedev->ops = &vfio_ccw_ops;
-    vbasedev->type = VFIO_DEVICE_TYPE_CCW;
-    vbasedev->dev = dev;
-
-    /*
-     * All vfio-ccw devices are believed to operate in a way compatible with
-     * discarding of memory in RAM blocks, ie. pages pinned in the host are
-     * in the current working set of the guest driver and therefore never
-     * overlap e.g., with pages available to the guest balloon driver.  This
-     * needs to be set before vfio_get_device() for vfio common to handle
-     * ram_block_discard_disable().
-     */
-    vbasedev->ram_block_discard_allowed = true;
-
     ret = vfio_attach_device(cdev->mdevid, vbasedev,
                              &address_space_memory, errp);
     if (ret) {
@@ -695,8 +681,22 @@ static const VMStateDescription vfio_ccw_vmstate = {
 static void vfio_ccw_instance_init(Object *obj)
 {
     VFIOCCWDevice *vcdev = VFIO_CCW(obj);
+    VFIODevice *vbasedev = &vcdev->vdev;
+
+    vbasedev->type = VFIO_DEVICE_TYPE_CCW;
+    vbasedev->ops = &vfio_ccw_ops;
+    vbasedev->dev = DEVICE(vcdev);
+    vbasedev->fd = -1;
 
-    vcdev->vdev.fd = -1;
+    /*
+     * All vfio-ccw devices are believed to operate in a way compatible with
+     * discarding of memory in RAM blocks, ie. pages pinned in the host are
+     * in the current working set of the guest driver and therefore never
+     * overlap e.g., with pages available to the guest balloon driver.  This
+     * needs to be set before vfio_get_device() for vfio common to handle
+     * ram_block_discard_disable().
+     */
+    vbasedev->ram_block_discard_allowed = true;
 }
 
 #ifdef CONFIG_IOMMUFD
-- 
2.39.3