Re: [Lguest] [PATCH] virtio config_ops refactoring

Dor Laor wrote:

ron minnich wrote:

Hi, I'm sorry, I've been stuck on other things (NFS RDMA anyone?) and
missed part of this discussion.

Is it really the case that operations on virtio devices will involve
outl/inl etc.?

What's the problem with them?

Except for the kick event it's not performance critical and the difference between pio vmexit

and hypercall exit is very small.

If you're a nutty guy who's interesting in creating the most absolute minimal VMM to run exotic paravirtual guests on massive clusters, then requiring PIO implies that you have to have an instruction decoder which is goes against the earlier goal ;-)

Regards,

Anthony Liguori

I don't know about problems in other architectures, maybe mmio is better?
Dor.

Apologies in advance for my failure to pay attention.

thanks

ron
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---

• References:
  • virtio config_ops refactoring
    • From: Anthony Liguori <[email protected]>
  • Re: [PATCH] virtio config_ops refactoring
    • From: Anthony Liguori <[email protected]>
  • Re: [PATCH] virtio config_ops refactoring
    • From: Rusty Russell <[email protected]>
  • Re: [PATCH] virtio config_ops refactoring
    • From: Anthony Liguori <[email protected]>
  • Re: [Lguest] [PATCH] virtio config_ops refactoring
    • From: "ron minnich" <[email protected]>

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