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qemu-kvm/SOURCES/kvm-vfio-Introduce-a-helper-function-to-initialize-VFIOD.patch

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From f554328f6f4702743af71befcb83c25c36e4fa4d Mon Sep 17 00:00:00 2001
From: Zhenzhong Duan <zhenzhong.duan@intel.com>
Date: Tue, 21 Nov 2023 16:44:25 +0800
Subject: [PATCH 046/101] vfio: Introduce a helper function to initialize
VFIODevice
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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: [45/67] 73225f394540bf5aeb70c0bdb89771f19a6d286d (eauger1/centos-qemu-kvm)
Introduce a helper function to replace the common code to initialize
VFIODevice in pci, platform, ap and ccw VFIO device.
No functional change intended.
Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit 6106a329141af7d47bdc3346ce9820d4714e0e5d)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
hw/vfio/ap.c | 8 ++------
hw/vfio/ccw.c | 8 ++------
hw/vfio/helpers.c | 11 +++++++++++
hw/vfio/pci.c | 6 ++----
hw/vfio/platform.c | 6 ++----
include/hw/vfio/vfio-common.h | 2 ++
6 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
index 95fe7cd98b..e157aa1ff7 100644
--- a/hw/vfio/ap.c
+++ b/hw/vfio/ap.c
@@ -226,18 +226,14 @@ static void vfio_ap_instance_init(Object *obj)
VFIOAPDevice *vapdev = VFIO_AP_DEVICE(obj);
VFIODevice *vbasedev = &vapdev->vdev;
- vbasedev->type = VFIO_DEVICE_TYPE_AP;
- vbasedev->ops = &vfio_ap_ops;
- vbasedev->dev = DEVICE(vapdev);
- vbasedev->fd = -1;
-
/*
* vfio-ap devices operate in a way compatible with discarding of
* memory in RAM blocks, as no pages are pinned in the host.
* This needs to be set before vfio_get_device() for vfio common to
* handle ram_block_discard_disable().
*/
- vbasedev->ram_block_discard_allowed = true;
+ vfio_device_init(vbasedev, VFIO_DEVICE_TYPE_AP, &vfio_ap_ops,
+ DEVICE(vapdev), true);
}
#ifdef CONFIG_IOMMUFD
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index 6305a4c1b8..90e4a53437 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -683,11 +683,6 @@ 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;
-
/*
* 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
@@ -696,7 +691,8 @@ static void vfio_ccw_instance_init(Object *obj)
* needs to be set before vfio_get_device() for vfio common to handle
* ram_block_discard_disable().
*/
- vbasedev->ram_block_discard_allowed = true;
+ vfio_device_init(vbasedev, VFIO_DEVICE_TYPE_CCW, &vfio_ccw_ops,
+ DEVICE(vcdev), true);
}
#ifdef CONFIG_IOMMUFD
diff --git a/hw/vfio/helpers.c b/hw/vfio/helpers.c
index 3592c3d54e..6789870802 100644
--- a/hw/vfio/helpers.c
+++ b/hw/vfio/helpers.c
@@ -652,3 +652,14 @@ void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp)
}
vbasedev->fd = fd;
}
+
+void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
+ DeviceState *dev, bool ram_discard)
+{
+ vbasedev->type = type;
+ vbasedev->ops = ops;
+ vbasedev->dev = dev;
+ vbasedev->fd = -1;
+
+ vbasedev->ram_block_discard_allowed = ram_discard;
+}
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 3f5900cc46..83c3238608 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3353,10 +3353,8 @@ static void vfio_instance_init(Object *obj)
vdev->host.slot = ~0U;
vdev->host.function = ~0U;
- vbasedev->type = VFIO_DEVICE_TYPE_PCI;
- vbasedev->ops = &vfio_pci_ops;
- vbasedev->dev = DEVICE(vdev);
- vbasedev->fd = -1;
+ vfio_device_init(vbasedev, VFIO_DEVICE_TYPE_PCI, &vfio_pci_ops,
+ DEVICE(vdev), false);
vdev->nv_gpudirect_clique = 0xFF;
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index 506eb8193f..a8d9b7da63 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -657,10 +657,8 @@ static void vfio_platform_instance_init(Object *obj)
VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(obj);
VFIODevice *vbasedev = &vdev->vbasedev;
- vbasedev->type = VFIO_DEVICE_TYPE_PLATFORM;
- vbasedev->ops = &vfio_platform_ops;
- vbasedev->dev = DEVICE(vdev);
- vbasedev->fd = -1;
+ vfio_device_init(vbasedev, VFIO_DEVICE_TYPE_PLATFORM, &vfio_platform_ops,
+ DEVICE(vdev), false);
}
#ifdef CONFIG_IOMMUFD
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index efcba19f66..b8aa8a5495 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -257,4 +257,6 @@ int vfio_get_dirty_bitmap(const VFIOContainerBase *bcontainer, uint64_t iova,
/* Returns 0 on success, or a negative errno. */
int vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp);
+void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
+ DeviceState *dev, bool ram_discard);
#endif /* HW_VFIO_VFIO_COMMON_H */
--
2.39.3
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