Lucas Amaral <[email protected]> writes: > Set blob_alignment to the host page size so the guest kernel can > align blob BAR offsets accordingly, avoiding alignment mismatches > with the VMM's memory mapping API (e.g., hv_vm_map on macOS). > > Guest-side kernel support (drm_mm alignment) is pending upstream > Linux merge. > > Signed-off-by: Lucas Amaral <[email protected]> > --- > hw/display/virtio-gpu.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c > index de7a86a7..44ae5034 100644 > --- a/hw/display/virtio-gpu.c > +++ b/hw/display/virtio-gpu.c > @@ -1532,6 +1532,14 @@ void virtio_gpu_device_realize(DeviceState *qdev, > Error **errp) > #endif > } > > + /* > + * TODO: guest-side F_BLOB_ALIGNMENT support pending upstream Linux merge > + * (Sergio Lopez's patches, Nov 2025). Until merged, the guest won't > + * negotiate this feature. The host advertises it per OASIS virtio spec. > + */ > + g->parent_obj.virtio_config.blob_alignment = > + cpu_to_le32(qemu_real_host_page_size()); > +
Is it merged yet? > if (!virtio_gpu_base_device_realize(qdev, > virtio_gpu_handle_ctrl_cb, > virtio_gpu_handle_cursor_cb, -- Alex Bennée Virtualisation Tech Lead @ Linaro
