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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:07 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:17 +0200
commit9260319e7411ff8281700a532caa436f40120ec4 (patch)
tree2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues/target_missing/host_missing/accel_missing/1342.toml
parent225caa38269323af1bfc2daadff5ec8bd930747f (diff)
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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1342.toml')
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diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1342.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1342.toml
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@@ -1,34 +0,0 @@
-id = 1342
-title = "Default machine setting of force-legacy=true causes problems for any modern VirtIO device using MMIO"
-state = "opened"
-created_at = "2022-11-25T16:31:04.271Z"
-closed_at = "n/a"
-labels = ["Documentation", "device:virtio", "kind::Bug"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/1342"
-host-os = "Linux"
-host-arch = "All"
-qemu-version = "7.2-rc2 and before"
-guest-os = "Linux"
-guest-arch = "All"
-description = """The default causes problems if you enable any non-legacy VirtIO device which has the VIRTIO_F_VERSION_1 feature bit will not properly read all feature bits. This is because reading VIRTIO_MMIO_VERSION returns VIRT_VERSION_LEGACY which in turn results in the driver not reading all feature bits, e.g. the qtest access:
-
-```
-static uint64_t qvirtio_mmio_get_features(QVirtioDevice *d)
-{
-    QVirtioMMIODevice *dev = container_of(d, QVirtioMMIODevice, vdev);
-    uint64_t lo;
-    uint64_t hi = 0;
-
-    qtest_writel(dev->qts, dev->addr + QVIRTIO_MMIO_HOST_FEATURES_SEL, 0);
-    lo = qtest_readl(dev->qts, dev->addr + QVIRTIO_MMIO_HOST_FEATURES);
-
-    if (dev->version >= 2) {
-        qtest_writel(dev->qts, dev->addr + QVIRTIO_MMIO_HOST_FEATURES_SEL, 1);
-        hi = qtest_readl(dev->qts, dev->addr + QVIRTIO_MMIO_HOST_FEATURES);
-    }
-
-    return (hi << 32) | lo;
-}
-```"""
-reproduce = "n/a"
-additional = """"""