From: Cindy Lu <lulu@redhat.com>
To: lulu@redhat.com, mst@redhat.com, jasowang@redhat.com,
qemu-devel@nongnu.org
Subject: [PATCH v6 2/9] virtio-pci:decouple virtqueue from interrupt setting process
Date: Tue, 27 Apr 2021 11:39:44 +0800 [thread overview]
Message-ID: <20210427033951.29805-3-lulu@redhat.com> (raw)
In-Reply-To: <20210427033951.29805-1-lulu@redhat.com>
Now the code for interrupt/vector are coupling
with the vq number, this patch will decouple the vritqueue
numbers from these functions.
Signed-off-by: Cindy Lu <lulu@redhat.com>
---
hw/virtio/virtio-pci.c | 51 ++++++++++++++++++++++++------------------
1 file changed, 29 insertions(+), 22 deletions(-)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 36524a5728..2b7e6cc0d9 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -691,23 +691,17 @@ static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
}
static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
- unsigned int queue_no,
+ EventNotifier *n,
unsigned int vector)
{
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
- VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
- VirtQueue *vq = virtio_get_queue(vdev, queue_no);
- EventNotifier *n = virtio_queue_get_guest_notifier(vq);
return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, irqfd->virq);
}
static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy,
- unsigned int queue_no,
+ EventNotifier *n ,
unsigned int vector)
{
- VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
- VirtQueue *vq = virtio_get_queue(vdev, queue_no);
- EventNotifier *n = virtio_queue_get_guest_notifier(vq);
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
int ret;
@@ -722,7 +716,8 @@ static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
unsigned int vector;
int ret, queue_no;
-
+ VirtQueue *vq;
+ EventNotifier *n;
for (queue_no = 0; queue_no < nvqs; queue_no++) {
if (!virtio_queue_get_num(vdev, queue_no)) {
break;
@@ -739,7 +734,9 @@ static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
* Otherwise, delay until unmasked in the frontend.
*/
if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
- ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
+ vq = virtio_get_queue(vdev, queue_no);
+ n = virtio_queue_get_guest_notifier(vq);
+ ret = kvm_virtio_pci_irqfd_use(proxy, n, vector);
if (ret < 0) {
kvm_virtio_pci_vq_vector_release(proxy, vector);
goto undo;
@@ -755,7 +752,9 @@ undo:
continue;
}
if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
- kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
+ vq = virtio_get_queue(vdev, queue_no);
+ n = virtio_queue_get_guest_notifier(vq);
+ kvm_virtio_pci_irqfd_release(proxy, n, vector);
}
kvm_virtio_pci_vq_vector_release(proxy, vector);
}
@@ -769,7 +768,8 @@ static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
unsigned int vector;
int queue_no;
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-
+ VirtQueue *vq;
+ EventNotifier *n;
for (queue_no = 0; queue_no < nvqs; queue_no++) {
if (!virtio_queue_get_num(vdev, queue_no)) {
break;
@@ -782,7 +782,9 @@ static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
* Otherwise, it was cleaned when masked in the frontend.
*/
if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
- kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
+ vq = virtio_get_queue(vdev, queue_no);
+ n = virtio_queue_get_guest_notifier(vq);
+ kvm_virtio_pci_irqfd_release(proxy, n, vector);
}
kvm_virtio_pci_vq_vector_release(proxy, vector);
}
@@ -791,12 +793,11 @@ static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
unsigned int queue_no,
unsigned int vector,
- MSIMessage msg)
+ MSIMessage msg,
+ EventNotifier *n)
{
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
- VirtQueue *vq = virtio_get_queue(vdev, queue_no);
- EventNotifier *n = virtio_queue_get_guest_notifier(vq);
VirtIOIRQFD *irqfd;
int ret = 0;
@@ -823,14 +824,15 @@ static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy,
event_notifier_set(n);
}
} else {
- ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector);
+ ret = kvm_virtio_pci_irqfd_use(proxy, n, vector);
}
return ret;
}
static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
unsigned int queue_no,
- unsigned int vector)
+ unsigned int vector,
+ EventNotifier *n)
{
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
@@ -841,7 +843,7 @@ static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy,
if (vdev->use_guest_notifier_mask && k->guest_notifier_mask) {
k->guest_notifier_mask(vdev, queue_no, true);
} else {
- kvm_virtio_pci_irqfd_release(proxy, queue_no, vector);
+ kvm_virtio_pci_irqfd_release(proxy, n, vector);
}
}
@@ -851,6 +853,7 @@ static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
+ EventNotifier *n;
int ret, index, unmasked = 0;
while (vq) {
@@ -859,7 +862,8 @@ static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
break;
}
if (index < proxy->nvqs_with_notifiers) {
- ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg);
+ n = virtio_queue_get_guest_notifier(vq);
+ ret = virtio_pci_vq_vector_unmask(proxy, index, vector, msg, n);
if (ret < 0) {
goto undo;
}
@@ -875,7 +879,8 @@ undo:
while (vq && unmasked >= 0) {
index = virtio_get_queue_index(vq);
if (index < proxy->nvqs_with_notifiers) {
- virtio_pci_vq_vector_mask(proxy, index, vector);
+ n = virtio_queue_get_guest_notifier(vq);
+ virtio_pci_vq_vector_mask(proxy, index, vector, n);
--unmasked;
}
vq = virtio_vector_next_queue(vq);
@@ -888,15 +893,17 @@ static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev);
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
VirtQueue *vq = virtio_vector_first_queue(vdev, vector);
+ EventNotifier *n;
int index;
while (vq) {
index = virtio_get_queue_index(vq);
+ n = virtio_queue_get_guest_notifier(vq);
if (!virtio_queue_get_num(vdev, index)) {
break;
}
if (index < proxy->nvqs_with_notifiers) {
- virtio_pci_vq_vector_mask(proxy, index, vector);
+ virtio_pci_vq_vector_mask(proxy, index, vector, n);
}
vq = virtio_vector_next_queue(vq);
}
--
2.21.3
next prev parent reply other threads:[~2021-04-27 3:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 3:39 [PATCH v6 0/9] vhost-vdpa: add support for configure interrupt Cindy Lu
2021-04-27 3:39 ` [PATCH v6 1/9] hw: Add check for queue number Cindy Lu
2021-04-27 5:39 ` Jason Wang
2021-04-29 3:08 ` Cindy Lu
2021-04-27 3:39 ` Cindy Lu [this message]
2021-04-27 6:40 ` [PATCH v6 2/9] virtio-pci:decouple virtqueue from interrupt setting process Jason Wang
2021-04-27 7:17 ` Jason Wang
2021-04-27 3:39 ` [PATCH v6 3/9] vhost: add new call back function for config interrupt Cindy Lu
2021-04-27 3:39 ` [PATCH v6 4/9] vhost-vdpa: add support for config interrupt call back Cindy Lu
2021-04-27 3:39 ` [PATCH v6 5/9] vhost:add support for configure interrupt Cindy Lu
2021-04-27 7:04 ` Jason Wang
2021-04-27 3:39 ` [PATCH v6 6/9] virtio-mmio: add " Cindy Lu
2021-04-27 3:39 ` [PATCH v6 7/9] virtio-pci: " Cindy Lu
2021-04-27 7:12 ` Jason Wang
2021-04-29 3:07 ` Cindy Lu
2021-04-27 3:39 ` [PATCH v6 8/9] virtio: decouple virtqueue from set notifier fd handler Cindy Lu
2021-04-27 7:14 ` Jason Wang
2021-04-27 3:39 ` [PATCH v6 9/9] virtio-net: add peer_deleted check in virtio_net_handle_rx Cindy Lu
2021-04-27 7:15 ` Jason Wang
2021-04-27 3:57 ` [PATCH v6 0/9] vhost-vdpa: add support for configure interrupt no-reply
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