On 01/05/2025 19:36, Philippe Mathieu-Daudé wrote:

The VirtIOPCIProxy::ignore_backend_features boolean was only set
in the hw_compat_2_7[] array, via the 'x-ignore-backend-features=on'
property. We removed all machines using that array, lets remove
that property, simplify by only using the default version.

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
  include/hw/virtio/virtio-pci.h | 1 -
  hw/virtio/virtio-pci.c         | 5 +----
  2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h
index f962c9116c1..9838e8650a6 100644
--- a/include/hw/virtio/virtio-pci.h
+++ b/include/hw/virtio/virtio-pci.h
@@ -149,7 +149,6 @@ struct VirtIOPCIProxy {
      int config_cap;
      uint32_t flags;
      bool disable_modern;
-    bool ignore_backend_features;
      OnOffAuto disable_legacy;
      /* Transitional device id */
      uint16_t trans_devid;
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 8d68e56641a..7c965771907 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1965,8 +1965,7 @@ static void virtio_pci_device_plugged(DeviceState *d, 
Error **errp)
       * Virtio capabilities present without
       * VIRTIO_F_VERSION_1 confuses guests
       */
-    if (!proxy->ignore_backend_features &&
-            !virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
+    if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) {
          virtio_pci_disable_modern(proxy);
if (!legacy) {
@@ -2351,8 +2350,6 @@ static const Property virtio_pci_properties[] = {
                      VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, false),
      DEFINE_PROP_BIT("page-per-vq", VirtIOPCIProxy, flags,
                      VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, false),
-    DEFINE_PROP_BOOL("x-ignore-backend-features", VirtIOPCIProxy,
-                     ignore_backend_features, false),
      DEFINE_PROP_BIT("ats", VirtIOPCIProxy, flags,
                      VIRTIO_PCI_FLAG_ATS_BIT, false),
      DEFINE_PROP_BIT("x-ats-page-aligned", VirtIOPCIProxy, flags,

Reviewed-by: Mark Cave-Ayland <mark.caveayl...@nutanix.com>


ATB,

Mark.


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