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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-01 21:35:14 +0200 |
| commit | 3e4c5a6261770bced301b5e74233e7866166ea5b (patch) | |
| tree | 9379fddaba693ef8a045da06efee8529baa5f6f4 /gitlab/issues_text/target_missing/host_missing/accel_missing/1342 | |
| parent | e5634e2806195bee44407853c4bf8776f7abfa4f (diff) | |
| download | qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.tar.gz qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.zip | |
clean up repository
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/1342')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_missing/1342 | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1342 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1342 deleted file mode 100644 index 47664e458..000000000 --- a/gitlab/issues_text/target_missing/host_missing/accel_missing/1342 +++ /dev/null @@ -1,24 +0,0 @@ -Default machine setting of force-legacy=true causes problems for any modern VirtIO device using MMIO -Description of problem: -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; -} -``` -Additional information: - |