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[PULL 04/10] Revert "vhost: add support for configure interrupt"
From: |
Michael S. Tsirkin |
Subject: |
[PULL 04/10] Revert "vhost: add support for configure interrupt" |
Date: |
Mon, 10 Jan 2022 02:16:13 -0500 |
This reverts commit f7220a7ce21604a4bc6260ccca4dc9068c1f27f2.
---
include/hw/virtio/vhost.h | 4 ---
hw/virtio/vhost.c | 76 ---------------------------------------
2 files changed, 80 deletions(-)
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index b0f3b78987..58a73e7b7a 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -29,7 +29,6 @@ struct vhost_virtqueue {
unsigned long long used_phys;
unsigned used_size;
EventNotifier masked_notifier;
- EventNotifier masked_config_notifier;
struct vhost_dev *dev;
};
@@ -38,7 +37,6 @@ typedef unsigned long vhost_log_chunk_t;
#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
#define VHOST_INVALID_FEATURE_BIT (0xff)
-#define VHOST_QUEUE_NUM_CONFIG_INR 0
struct vhost_log {
unsigned long long size;
@@ -118,8 +116,6 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice
*vdev);
void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev);
int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
-bool vhost_config_pending(struct vhost_dev *hdev);
-void vhost_config_mask(struct vhost_dev *hdev, VirtIODevice *vdev, bool mask);
/* Test and clear masked event pending status.
* Should be called after unmask to avoid losing events.
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index cbf3b792da..7b03efccec 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1554,67 +1554,6 @@ void vhost_virtqueue_mask(struct vhost_dev *hdev,
VirtIODevice *vdev, int n,
}
}
-bool vhost_config_pending(struct vhost_dev *hdev)
-{
- assert(hdev->vhost_ops);
- if ((hdev->started == false) ||
- (hdev->vhost_ops->vhost_set_config_call == NULL)) {
- return false;
- }
-
- EventNotifier *notifier =
- &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier;
- return event_notifier_test_and_clear(notifier);
-}
-
-void vhost_config_mask(struct vhost_dev *hdev, VirtIODevice *vdev, bool mask)
-{
- int fd;
- int r;
- EventNotifier *notifier =
- &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier;
- EventNotifier *config_notifier = &vdev->config_notifier;
- assert(hdev->vhost_ops);
-
- if ((hdev->started == false) ||
- (hdev->vhost_ops->vhost_set_config_call == NULL)) {
- return;
- }
- if (mask) {
- assert(vdev->use_guest_notifier_mask);
- fd = event_notifier_get_fd(notifier);
- } else {
- fd = event_notifier_get_fd(config_notifier);
- }
- r = hdev->vhost_ops->vhost_set_config_call(hdev, fd);
- if (r < 0) {
- VHOST_OPS_DEBUG(r, "vhost_set_config_call failed");
- }
-}
-
-static void vhost_stop_config_intr(struct vhost_dev *dev)
-{
- int fd = -1;
- assert(dev->vhost_ops);
- if (dev->vhost_ops->vhost_set_config_call) {
- dev->vhost_ops->vhost_set_config_call(dev, fd);
- }
-}
-
-static void vhost_start_config_intr(struct vhost_dev *dev)
-{
- int r;
-
- assert(dev->vhost_ops);
- int fd = event_notifier_get_fd(&dev->vdev->config_notifier);
- if (dev->vhost_ops->vhost_set_config_call) {
- r = dev->vhost_ops->vhost_set_config_call(dev, fd);
- if (!r) {
- event_notifier_set(&dev->vdev->config_notifier);
- }
- }
-}
-
uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
uint64_t features)
{
@@ -1827,16 +1766,6 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice
*vdev)
}
}
- r = event_notifier_init(
- &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier, 0);
- if (r < 0) {
- return r;
- }
- event_notifier_test_and_clear(
- &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier);
- if (!vdev->use_guest_notifier_mask) {
- vhost_config_mask(hdev, vdev, true);
- }
if (hdev->log_enabled) {
uint64_t log_base;
@@ -1869,7 +1798,6 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice
*vdev)
vhost_device_iotlb_miss(hdev, vq->used_phys, true);
}
}
- vhost_start_config_intr(hdev);
return 0;
fail_log:
vhost_log_put(hdev, false);
@@ -1895,9 +1823,6 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice
*vdev)
/* should only be called after backend is connected */
assert(hdev->vhost_ops);
- event_notifier_test_and_clear(
- &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier);
- event_notifier_test_and_clear(&vdev->config_notifier);
if (hdev->vhost_ops->vhost_dev_start) {
hdev->vhost_ops->vhost_dev_start(hdev, false);
@@ -1915,7 +1840,6 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice
*vdev)
}
memory_listener_unregister(&hdev->iommu_listener);
}
- vhost_stop_config_intr(hdev);
vhost_log_put(hdev, true);
hdev->started = false;
hdev->vdev = NULL;
--
MST
- [PULL 00/10] virtio: revert config interrupt changes, Michael S. Tsirkin, 2022/01/10
- [PULL 01/10] Revert "virtio-pci: add support for configure interrupt", Michael S. Tsirkin, 2022/01/10
- [PULL 02/10] Revert "virtio-mmio: add support for configure interrupt", Michael S. Tsirkin, 2022/01/10
- [PULL 03/10] Revert "virtio-net: add support for configure interrupt", Michael S. Tsirkin, 2022/01/10
- [PULL 04/10] Revert "vhost: add support for configure interrupt",
Michael S. Tsirkin <=
- [PULL 05/10] Revert "virtio: add support for configure interrupt", Michael S. Tsirkin, 2022/01/10
- [PULL 06/10] Revert "vhost-vdpa: add support for config interrupt", Michael S. Tsirkin, 2022/01/10
- [PULL 07/10] Revert "vhost: introduce new VhostOps vhost_set_config_call", Michael S. Tsirkin, 2022/01/10
- [PULL 08/10] Revert "virtio-pci: decouple the single vector from the interrupt process", Michael S. Tsirkin, 2022/01/10
- [PULL 09/10] Revert "virtio-pci: decouple notifier from interrupt process", Michael S. Tsirkin, 2022/01/10
- [PULL 10/10] Revert "virtio: introduce macro IRTIO_CONFIG_IRQ_IDX", Michael S. Tsirkin, 2022/01/10
- Re: [PULL 00/10] virtio: revert config interrupt changes, Peter Maydell, 2022/01/10