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Subject: Re: [virtio-dev] [PATCH 2/2] virtio-gpu/2d: add docs/specs/virtio-gpu.txt
On Sa, 2014-09-13 at 07:14 +1000, Dave Airlie wrote: > >> Can the host refuse due to lack of resources? > > > > Yes. virtgpu_ctrl_hdr.type in the response will be set to > > VIRTGPU_RESP_ERR_* then. Current implementation does that only on > > malloc() failure, there is no accounting (yet) to limit the amout of > > memory the guest is allowed to allocate. > > We do probably need to work out some sort of accounting system, it can > probably reliably only be a total value of resources, since we've no > idea if the host driver will store them in VRAM or main memory. Quite > how to fail gracefully is a question, probably need to report to the > guest what context did the allocation and see if we can destroy it. Best would be if virgilrenderer.so just fails virgl_renderer_resource_create() calls. > Not reason I can remember, I think I was thinking of having separate > inval and detach at one point, but it didn't really make any sense, so > renaming to detach is fine with me. Done. cheers, Gerd
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