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From d135303da1187d9f214e520a977fe7c47e5ce1f0 Mon Sep 17 00:00:00 2001
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From: Cindy Lu <lulu@redhat.com>
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Date: Thu, 22 Dec 2022 15:04:45 +0800
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Subject: [PATCH 04/31] vhost: introduce new VhostOps vhost_set_config_call
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cindy Lu <lulu@redhat.com>
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RH-MergeRequest: 132: vhost-vdpa: support config interrupt in vhost-vdpa
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RH-Bugzilla: 1905805
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Eugenio Pérez <eperezma@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [4/10] c2492838d9c1415e42d2507f2956d640a30325f2 (lulu6/qemu-kvm3)
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https://bugzilla.redhat.com/show_bug.cgi?id=1905805
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This patch introduces new VhostOps vhost_set_config_call.
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This function allows the qemu to set the config
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event fd to kernel driver.
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Signed-off-by: Cindy Lu <lulu@redhat.com>
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Message-Id: <20221222070451.936503-5-lulu@redhat.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 9b30cdf9bbf9524a4f4f8a6eb551eb13cbbd3893)
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Signed-off-by: Cindy Lu <lulu@redhat.com>
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---
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include/hw/virtio/vhost-backend.h | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
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index eab46d7f0b..c5ab49051e 100644
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--- a/include/hw/virtio/vhost-backend.h
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+++ b/include/hw/virtio/vhost-backend.h
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@@ -128,6 +128,8 @@ typedef int (*vhost_get_device_id_op)(struct vhost_dev *dev, uint32_t *dev_id);
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typedef bool (*vhost_force_iommu_op)(struct vhost_dev *dev);
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+typedef int (*vhost_set_config_call_op)(struct vhost_dev *dev,
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+ int fd);
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typedef struct VhostOps {
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VhostBackendType backend_type;
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vhost_backend_init vhost_backend_init;
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@@ -174,6 +176,7 @@ typedef struct VhostOps {
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vhost_vq_get_addr_op vhost_vq_get_addr;
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vhost_get_device_id_op vhost_get_device_id;
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vhost_force_iommu_op vhost_force_iommu;
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+ vhost_set_config_call_op vhost_set_config_call;
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} VhostOps;
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int vhost_backend_update_device_iotlb(struct vhost_dev *dev,
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--
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2.31.1
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