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qemu-kvm/SOURCES/kvm-virtio-introduce-macro-...

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From 34a267758cf016f34b327318500efdbf0f606033 Mon Sep 17 00:00:00 2001
From: Cindy Lu <lulu@redhat.com>
Date: Thu, 22 Dec 2022 15:04:42 +0800
Subject: [PATCH 01/31] virtio: introduce macro VIRTIO_CONFIG_IRQ_IDX
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cindy Lu <lulu@redhat.com>
RH-MergeRequest: 132: vhost-vdpa: support config interrupt in vhost-vdpa
RH-Bugzilla: 1905805
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Eugenio Pérez <eperezma@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [1/10] f374aaae221bc5a4c2521a267d21350b812e11ba (lulu6/qemu-kvm3)
https://bugzilla.redhat.com/show_bug.cgi?id=1905805
To support configure interrupt for vhost-vdpa
Introduce VIRTIO_CONFIG_IRQ_IDX -1 as configure interrupt's queue index,
Then we can reuse the functions guest_notifier_mask and guest_notifier_pending.
Add the check of queue index in these drivers, if the driver does not support
configure interrupt, the function will just return
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20221222070451.936503-2-lulu@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 544f0278afcab2bebab61b14e4c2c58e65911f5b)
Signed-off-by: Cindy Lu <lulu@redhat.com>
---
hw/display/vhost-user-gpu.c | 18 ++++++++++++++++++
hw/net/virtio-net.c | 22 ++++++++++++++++++++--
hw/virtio/vhost-user-fs.c | 18 ++++++++++++++++++
hw/virtio/vhost-user-gpio.c | 10 ++++++++++
hw/virtio/vhost-vsock-common.c | 18 ++++++++++++++++++
hw/virtio/virtio-crypto.c | 18 ++++++++++++++++++
include/hw/virtio/virtio.h | 3 +++
7 files changed, 105 insertions(+), 2 deletions(-)
diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
index 19c0e20103..4380a5e672 100644
--- a/hw/display/vhost-user-gpu.c
+++ b/hw/display/vhost-user-gpu.c
@@ -486,6 +486,15 @@ vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx)
{
VhostUserGPU *g = VHOST_USER_GPU(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return false;
+ }
return vhost_virtqueue_pending(&g->vhost->dev, idx);
}
@@ -494,6 +503,15 @@ vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask)
{
VhostUserGPU *g = VHOST_USER_GPU(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
vhost_virtqueue_mask(&g->vhost->dev, vdev, idx, mask);
}
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index aba12759d5..bee35d6f9f 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -3316,6 +3316,15 @@ static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx)
} else {
nc = qemu_get_subqueue(n->nic, vq2q(idx));
}
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return false
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return false;
+ }
return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx);
}
@@ -3339,8 +3348,17 @@ static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx,
} else {
nc = qemu_get_subqueue(n->nic, vq2q(idx));
}
- vhost_net_virtqueue_mask(get_vhost_net(nc->peer),
- vdev, idx, mask);
+ /*
+ *Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
+
+ vhost_net_virtqueue_mask(get_vhost_net(nc->peer), vdev, idx, mask);
}
static void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features)
diff --git a/hw/virtio/vhost-user-fs.c b/hw/virtio/vhost-user-fs.c
index d97b179e6f..f5049735ac 100644
--- a/hw/virtio/vhost-user-fs.c
+++ b/hw/virtio/vhost-user-fs.c
@@ -159,6 +159,15 @@ static void vuf_guest_notifier_mask(VirtIODevice *vdev, int idx,
{
VHostUserFS *fs = VHOST_USER_FS(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
vhost_virtqueue_mask(&fs->vhost_dev, vdev, idx, mask);
}
@@ -166,6 +175,15 @@ static bool vuf_guest_notifier_pending(VirtIODevice *vdev, int idx)
{
VHostUserFS *fs = VHOST_USER_FS(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return false;
+ }
return vhost_virtqueue_pending(&fs->vhost_dev, idx);
}
diff --git a/hw/virtio/vhost-user-gpio.c b/hw/virtio/vhost-user-gpio.c
index b7b82a1099..fe3da32c74 100644
--- a/hw/virtio/vhost-user-gpio.c
+++ b/hw/virtio/vhost-user-gpio.c
@@ -191,6 +191,16 @@ static void vu_gpio_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask)
{
VHostUserGPIO *gpio = VHOST_USER_GPIO(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
+
vhost_virtqueue_mask(&gpio->vhost_dev, vdev, idx, mask);
}
diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c
index d21c72b401..d2b5519d5a 100644
--- a/hw/virtio/vhost-vsock-common.c
+++ b/hw/virtio/vhost-vsock-common.c
@@ -127,6 +127,15 @@ static void vhost_vsock_common_guest_notifier_mask(VirtIODevice *vdev, int idx,
{
VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
vhost_virtqueue_mask(&vvc->vhost_dev, vdev, idx, mask);
}
@@ -135,6 +144,15 @@ static bool vhost_vsock_common_guest_notifier_pending(VirtIODevice *vdev,
{
VHostVSockCommon *vvc = VHOST_VSOCK_COMMON(vdev);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return false;
+ }
return vhost_virtqueue_pending(&vvc->vhost_dev, idx);
}
diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index 97da74e719..516425e26a 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -1182,6 +1182,15 @@ static void virtio_crypto_guest_notifier_mask(VirtIODevice *vdev, int idx,
assert(vcrypto->vhost_started);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return;
+ }
cryptodev_vhost_virtqueue_mask(vdev, queue, idx, mask);
}
@@ -1192,6 +1201,15 @@ static bool virtio_crypto_guest_notifier_pending(VirtIODevice *vdev, int idx)
assert(vcrypto->vhost_started);
+ /*
+ * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
+ * as the Marco of configure interrupt's IDX, If this driver does not
+ * support, the function will return
+ */
+
+ if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+ return false;
+ }
return cryptodev_vhost_virtqueue_pending(vdev, queue, idx);
}
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index acfd4df125..1f4a41b958 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -79,6 +79,9 @@ typedef struct VirtQueueElement
#define VIRTIO_NO_VECTOR 0xffff
+/* special index value used internally for config irqs */
+#define VIRTIO_CONFIG_IRQ_IDX -1
+
#define TYPE_VIRTIO_DEVICE "virtio-device"
OBJECT_DECLARE_TYPE(VirtIODevice, VirtioDeviceClass, VIRTIO_DEVICE)
--
2.31.1
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