216 lines
8.1 KiB
Diff
216 lines
8.1 KiB
Diff
From b97597030e537248f3986589cfc4a32a3e7eb8f5 Mon Sep 17 00:00:00 2001
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From: fangyi <eric.fangyi@huawei.com>
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Date: Wed, 22 Nov 2023 09:46:06 +0800
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Subject: [PATCH] Revert "virtio-pci: add support for configure interrupt"
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This reverts commit d5d24d859c3957ea1674d0e102f96439cdbfe93a.
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Fixes: d5d24d859c ("virtio-pci: add support for configure interrupt")
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Cc: "Cindy Lu" <lulu@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: fangyi <eric.fangyi@huawei.com>
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---
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hw/virtio/virtio-pci.c | 92 ++++++------------------------------------
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hw/virtio/virtio-pci.h | 4 +-
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2 files changed, 13 insertions(+), 83 deletions(-)
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diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
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index 90237f523e..75be770971 100644
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--- a/hw/virtio/virtio-pci.c
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+++ b/hw/virtio/virtio-pci.c
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@@ -812,8 +812,7 @@ static int virtio_pci_get_notifier(VirtIOPCIProxy *proxy, int queue_no,
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VirtQueue *vq;
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if (queue_no == VIRTIO_CONFIG_IRQ_IDX) {
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- *n = virtio_config_get_guest_notifier(vdev);
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- *vector = vdev->config_vector;
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+ return -1;
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} else {
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if (!virtio_queue_get_num(vdev, queue_no)) {
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return -1;
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@@ -888,10 +887,6 @@ static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
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return ret;
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}
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-static int kvm_virtio_pci_vector_config_use(VirtIOPCIProxy *proxy)
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-{
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- return kvm_virtio_pci_vector_use_one(proxy, VIRTIO_CONFIG_IRQ_IDX);
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-}
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static void kvm_virtio_pci_vector_release_one(VirtIOPCIProxy *proxy,
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int queue_no)
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@@ -929,11 +924,6 @@ static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
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}
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}
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-static void kvm_virtio_pci_vector_config_release(VirtIOPCIProxy *proxy)
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-{
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- kvm_virtio_pci_vector_release_one(proxy, VIRTIO_CONFIG_IRQ_IDX);
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-}
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-
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static int virtio_pci_one_vector_unmask(VirtIOPCIProxy *proxy,
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unsigned int queue_no,
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unsigned int vector,
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@@ -1015,17 +1005,9 @@ static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
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}
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vq = virtio_vector_next_queue(vq);
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}
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- /* unmask config intr */
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- n = virtio_config_get_guest_notifier(vdev);
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- ret = virtio_pci_one_vector_unmask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector,
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- msg, n);
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- if (ret < 0) {
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- goto undo_config;
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- }
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+
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return 0;
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-undo_config:
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- n = virtio_config_get_guest_notifier(vdev);
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- virtio_pci_one_vector_mask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector, n);
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+
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undo:
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vq = virtio_vector_first_queue(vdev, vector);
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while (vq && unmasked >= 0) {
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@@ -1059,8 +1041,6 @@ static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
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}
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vq = virtio_vector_next_queue(vq);
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}
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- n = virtio_config_get_guest_notifier(vdev);
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- virtio_pci_one_vector_mask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector, n);
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}
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static void virtio_pci_vector_poll(PCIDevice *dev,
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@@ -1092,34 +1072,6 @@ static void virtio_pci_vector_poll(PCIDevice *dev,
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msix_set_pending(dev, vector);
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}
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}
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- /* poll the config intr */
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- ret = virtio_pci_get_notifier(proxy, VIRTIO_CONFIG_IRQ_IDX, ¬ifier,
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- &vector);
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- if (ret < 0) {
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- return;
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- }
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- if (vector < vector_start || vector >= vector_end ||
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- !msix_is_masked(dev, vector)) {
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- return;
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- }
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- if (k->guest_notifier_pending) {
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- if (k->guest_notifier_pending(vdev, VIRTIO_CONFIG_IRQ_IDX)) {
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- msix_set_pending(dev, vector);
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- }
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- } else if (event_notifier_test_and_clear(notifier)) {
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- msix_set_pending(dev, vector);
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- }
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-}
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-
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-void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq,
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- int n, bool assign,
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- bool with_irqfd)
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-{
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- if (n == VIRTIO_CONFIG_IRQ_IDX) {
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- virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
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- } else {
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- virtio_queue_set_guest_notifier_fd_handler(vq, assign, with_irqfd);
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- }
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}
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static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
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@@ -1128,25 +1080,17 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
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VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
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VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
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- VirtQueue *vq = NULL;
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- EventNotifier *notifier = NULL;
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-
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- if (n == VIRTIO_CONFIG_IRQ_IDX) {
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- notifier = virtio_config_get_guest_notifier(vdev);
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- } else {
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- vq = virtio_get_queue(vdev, n);
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- notifier = virtio_queue_get_guest_notifier(vq);
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- }
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+ VirtQueue *vq = virtio_get_queue(vdev, n);
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+ EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
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if (assign) {
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int r = event_notifier_init(notifier, 0);
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if (r < 0) {
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return r;
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}
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- virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, true, with_irqfd);
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+ virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
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} else {
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- virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, false,
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- with_irqfd);
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+ virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
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event_notifier_cleanup(notifier);
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}
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@@ -1188,7 +1132,6 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
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msix_unset_vector_notifiers(&proxy->pci_dev);
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if (proxy->vector_irqfd) {
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kvm_virtio_pci_vector_release(proxy, nvqs);
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- kvm_virtio_pci_vector_config_release(proxy);
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g_free(proxy->vector_irqfd);
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proxy->vector_irqfd = NULL;
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}
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@@ -1204,11 +1147,7 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
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goto assign_error;
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}
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}
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- r = virtio_pci_set_guest_notifier(d, VIRTIO_CONFIG_IRQ_IDX, assign,
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- with_irqfd);
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- if (r < 0) {
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- goto config_assign_error;
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- }
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+
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/* Must set vector notifier after guest notifier has been assigned */
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if ((with_irqfd || k->guest_notifier_mask) && assign) {
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if (with_irqfd) {
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@@ -1217,14 +1156,11 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
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msix_nr_vectors_allocated(&proxy->pci_dev));
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r = kvm_virtio_pci_vector_use(proxy, nvqs);
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if (r < 0) {
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- goto config_assign_error;
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+ goto assign_error;
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}
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}
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- r = kvm_virtio_pci_vector_config_use(proxy);
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- if (r < 0) {
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- goto config_error;
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- }
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- r = msix_set_vector_notifiers(&proxy->pci_dev, virtio_pci_vector_unmask,
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+ r = msix_set_vector_notifiers(&proxy->pci_dev,
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+ virtio_pci_vector_unmask,
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virtio_pci_vector_mask,
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virtio_pci_vector_poll);
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if (r < 0) {
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@@ -1239,11 +1175,7 @@ notifiers_error:
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assert(assign);
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kvm_virtio_pci_vector_release(proxy, nvqs);
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}
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-config_error:
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- kvm_virtio_pci_vector_config_release(proxy);
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-config_assign_error:
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- virtio_pci_set_guest_notifier(d, VIRTIO_CONFIG_IRQ_IDX, !assign,
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- with_irqfd);
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+
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assign_error:
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/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
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assert(assign);
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diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
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index 6d8e071d8d..d95b1a13a5 100644
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--- a/hw/virtio/virtio-pci.h
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+++ b/hw/virtio/virtio-pci.h
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@@ -256,7 +256,5 @@ void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t);
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* @fixed_queues.
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*/
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unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues);
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-void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq,
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- int n, bool assign,
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- bool with_irqfd);
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+
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#endif
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--
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2.27.0
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