Laszlo Ersek 0a781bdc7f OvmfPkg: VirtioRngDxe: adapt feature negotiation to virtio-1.0 ... Relative to virtio-0.9.5, virtio-1.0 reverses the order of queue discovery and feature negotiation. In virtio-1.0, feature negotiation has to complete first, and the device can also reject a self-inconsistent feature request through the new VSTAT_FEATURES_OK status bit. (For example if the driver requests a higher level feature but clears a prerequisite feature.) Furthermore, we retain the VIRTIO_F_VERSION_1 feature bit if the VIRTIO_DEVICE_PROTOCOL provider has high enough revision. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>		2016-04-06 19:21:50 +02:00
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VirtioRng.c	OvmfPkg: VirtioRngDxe: adapt feature negotiation to virtio-1.0	2016-04-06 19:21:50 +02:00
VirtioRng.h	…
VirtioRng.inf	…