From: "Michael S. Tsirkin" <mst@redhat.com>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>, Cindy Lu <lulu@redhat.com>
Subject: [PULL v2 01/10] Revert "virtio-pci: add support for configure interrupt"
Date: Mon, 10 Jan 2022 16:04:49 -0500 [thread overview]
Message-ID: <20220110210416.18779-2-mst@redhat.com> (raw)
In-Reply-To: <20220110210416.18779-1-mst@redhat.com>
This reverts commit d5d24d859c3957ea1674d0e102f96439cdbfe93a.
Fixes: d5d24d859c ("virtio-pci: add support for configure interrupt")
Cc: "Cindy Lu" <lulu@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/virtio/virtio-pci.h | 4 +-
hw/virtio/virtio-pci.c | 92 ++++++------------------------------------
2 files changed, 13 insertions(+), 83 deletions(-)
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index b704acc5a8..2446dcd9ae 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -251,7 +251,5 @@ void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t);
* @fixed_queues.
*/
unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues);
-void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq,
- int n, bool assign,
- bool with_irqfd);
+
#endif
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 98fb5493ae..7201cf3dc1 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -727,8 +727,7 @@ static int virtio_pci_get_notifier(VirtIOPCIProxy *proxy, int queue_no,
VirtQueue *vq;
if (queue_no == VIRTIO_CONFIG_IRQ_IDX) {
- *n = virtio_config_get_guest_notifier(vdev);
- *vector = vdev->config_vector;
+ return -1;
} else {
if (!virtio_queue_get_num(vdev, queue_no)) {
return -1;
@@ -803,10 +802,6 @@ static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs)
return ret;
}
-static int kvm_virtio_pci_vector_config_use(VirtIOPCIProxy *proxy)
-{
- return kvm_virtio_pci_vector_use_one(proxy, VIRTIO_CONFIG_IRQ_IDX);
-}
static void kvm_virtio_pci_vector_release_one(VirtIOPCIProxy *proxy,
int queue_no)
@@ -844,11 +839,6 @@ static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs)
}
}
-static void kvm_virtio_pci_vector_config_release(VirtIOPCIProxy *proxy)
-{
- kvm_virtio_pci_vector_release_one(proxy, VIRTIO_CONFIG_IRQ_IDX);
-}
-
static int virtio_pci_one_vector_unmask(VirtIOPCIProxy *proxy,
unsigned int queue_no,
unsigned int vector,
@@ -930,17 +920,9 @@ static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector,
}
vq = virtio_vector_next_queue(vq);
}
- /* unmask config intr */
- n = virtio_config_get_guest_notifier(vdev);
- ret = virtio_pci_one_vector_unmask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector,
- msg, n);
- if (ret < 0) {
- goto undo_config;
- }
+
return 0;
-undo_config:
- n = virtio_config_get_guest_notifier(vdev);
- virtio_pci_one_vector_mask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector, n);
+
undo:
vq = virtio_vector_first_queue(vdev, vector);
while (vq && unmasked >= 0) {
@@ -974,8 +956,6 @@ static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector)
}
vq = virtio_vector_next_queue(vq);
}
- n = virtio_config_get_guest_notifier(vdev);
- virtio_pci_one_vector_mask(proxy, VIRTIO_CONFIG_IRQ_IDX, vector, n);
}
static void virtio_pci_vector_poll(PCIDevice *dev,
@@ -1007,34 +987,6 @@ static void virtio_pci_vector_poll(PCIDevice *dev,
msix_set_pending(dev, vector);
}
}
- /* poll the config intr */
- ret = virtio_pci_get_notifier(proxy, VIRTIO_CONFIG_IRQ_IDX, ¬ifier,
- &vector);
- if (ret < 0) {
- return;
- }
- if (vector < vector_start || vector >= vector_end ||
- !msix_is_masked(dev, vector)) {
- return;
- }
- if (k->guest_notifier_pending) {
- if (k->guest_notifier_pending(vdev, VIRTIO_CONFIG_IRQ_IDX)) {
- msix_set_pending(dev, vector);
- }
- } else if (event_notifier_test_and_clear(notifier)) {
- msix_set_pending(dev, vector);
- }
-}
-
-void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueue *vq,
- int n, bool assign,
- bool with_irqfd)
-{
- if (n == VIRTIO_CONFIG_IRQ_IDX) {
- virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irqfd);
- } else {
- virtio_queue_set_guest_notifier_fd_handler(vq, assign, with_irqfd);
- }
}
static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
@@ -1043,25 +995,17 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
- VirtQueue *vq = NULL;
- EventNotifier *notifier = NULL;
-
- if (n == VIRTIO_CONFIG_IRQ_IDX) {
- notifier = virtio_config_get_guest_notifier(vdev);
- } else {
- vq = virtio_get_queue(vdev, n);
- notifier = virtio_queue_get_guest_notifier(vq);
- }
+ VirtQueue *vq = virtio_get_queue(vdev, n);
+ EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
if (assign) {
int r = event_notifier_init(notifier, 0);
if (r < 0) {
return r;
}
- virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, true, with_irqfd);
+ virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
} else {
- virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, false,
- with_irqfd);
+ virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
event_notifier_cleanup(notifier);
}
@@ -1103,7 +1047,6 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
msix_unset_vector_notifiers(&proxy->pci_dev);
if (proxy->vector_irqfd) {
kvm_virtio_pci_vector_release(proxy, nvqs);
- kvm_virtio_pci_vector_config_release(proxy);
g_free(proxy->vector_irqfd);
proxy->vector_irqfd = NULL;
}
@@ -1119,11 +1062,7 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
goto assign_error;
}
}
- r = virtio_pci_set_guest_notifier(d, VIRTIO_CONFIG_IRQ_IDX, assign,
- with_irqfd);
- if (r < 0) {
- goto config_assign_error;
- }
+
/* Must set vector notifier after guest notifier has been assigned */
if ((with_irqfd || k->guest_notifier_mask) && assign) {
if (with_irqfd) {
@@ -1132,14 +1071,11 @@ static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign)
msix_nr_vectors_allocated(&proxy->pci_dev));
r = kvm_virtio_pci_vector_use(proxy, nvqs);
if (r < 0) {
- goto config_assign_error;
+ goto assign_error;
}
}
- r = kvm_virtio_pci_vector_config_use(proxy);
- if (r < 0) {
- goto config_error;
- }
- r = msix_set_vector_notifiers(&proxy->pci_dev, virtio_pci_vector_unmask,
+ r = msix_set_vector_notifiers(&proxy->pci_dev,
+ virtio_pci_vector_unmask,
virtio_pci_vector_mask,
virtio_pci_vector_poll);
if (r < 0) {
@@ -1154,11 +1090,7 @@ notifiers_error:
assert(assign);
kvm_virtio_pci_vector_release(proxy, nvqs);
}
-config_error:
- kvm_virtio_pci_vector_config_release(proxy);
-config_assign_error:
- virtio_pci_set_guest_notifier(d, VIRTIO_CONFIG_IRQ_IDX, !assign,
- with_irqfd);
+
assign_error:
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
assert(assign);
--
MST
next prev parent reply other threads:[~2022-01-10 21:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 21:04 [PULL v2 00/10] virtio: revert config interrupt changes Michael S. Tsirkin
2022-01-10 21:04 ` Michael S. Tsirkin [this message]
2022-01-10 21:04 ` [PULL v2 02/10] Revert "virtio-mmio: add support for configure interrupt" Michael S. Tsirkin
2022-01-10 21:04 ` [PULL v2 03/10] Revert "virtio-net: " Michael S. Tsirkin
2022-01-10 21:04 ` [PULL v2 04/10] Revert "vhost: " Michael S. Tsirkin
2022-01-10 21:04 ` [PULL v2 05/10] Revert "virtio: " Michael S. Tsirkin
2022-01-10 21:05 ` [PULL v2 06/10] Revert "vhost-vdpa: add support for config interrupt" Michael S. Tsirkin
2022-01-10 21:05 ` [PULL v2 07/10] Revert "vhost: introduce new VhostOps vhost_set_config_call" Michael S. Tsirkin
2022-01-10 21:05 ` [PULL v2 08/10] Revert "virtio-pci: decouple the single vector from the interrupt process" Michael S. Tsirkin
2022-01-10 21:05 ` [PULL v2 09/10] Revert "virtio-pci: decouple notifier from " Michael S. Tsirkin
2022-01-10 21:05 ` [PULL v2 10/10] Revert "virtio: introduce macro IRTIO_CONFIG_IRQ_IDX" Michael S. Tsirkin
2022-01-11 11:37 ` [PULL v2 00/10] virtio: revert config interrupt changes Peter Maydell
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220110210416.18779-2-mst@redhat.com \
--to=mst@redhat.com \
--cc=lulu@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).