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Re: [PATCH v6 0/6] hmp, qmp: Add some commands to introspect virtio devi

From: Jonah Palmer
Subject: Re: [PATCH v6 0/6] hmp, qmp: Add some commands to introspect virtio devices
Date: Wed, 21 Jul 2021 04:53:26 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0

Hi Jason. My apologies for the delayed response, several work-related things came up recently, but they're slowing down now so I'm turning my attention these patches to get taken care of.

A few questions and comments below (and in other following patches):

On 7/13/21 10:42 PM, Jason Wang wrote:

在 2021/7/12 下午6:35, Jonah Palmer 写道:
         Dump the information of the head element of the third queue of virtio-scsi:

         (qemu) virtio queue-element /machine/peripheral-anon/device[3]/virtio-backend 3
         index: 122
         ndescs: 3
         descs: addr 0x7302d000 len 4096 (write), addr 0x3c951763 len 108 (write, next),
                addr 0x3c951728 len 51 (next)

I think it would be nice if we can show driver area and device area as well here.
Sure thing. And I apologize if it's obvious (I'm relatively new to virtio), but how can I expose the driver area?
I understand that virtio devices are part of the Qemu process, but I also thought that virtio drivers are in the 
guest's kernel, which I don't believe I can see into from Qemu (or, at least, it's not obvious to me). 



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