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Subject: Re: [PATCH v12 05/10] pci: add admin vq registers to virtio over pci
On 4/24/2023 6:06 PM, Max Gurtovoy wrote:
+If VIRTIO_F_ADMIN_VQ has been negotiated, and if the driver +configures any administration virtqueues, the driver MUST +configure the administration virtqueues using the index +in the range \field{admin_queue_index} to +\field{admin_queue_index} + \field{admin_queue_num} - 1 inclusive. +The driver MAY configure less administration virtqueues than +supported by the device.we need to say something about other virtq's indexes.For example, if aq index = 0 then for the vblk device the request queues would start from index = 1.can we address this ?
It may slightly complicate the device implementation when device dynamically changes the VQ indices based on the negotiation of the feature bit.
Also the drivers with and without need a different VQ index handling.I am thinking that aq index should not overlap with the vq index in range exposed by num_queues field.
This also aligns to the exclusion of aq count from num_queues field.
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