Messages in this thread | | | Subject | Re: [virtio-dev] Re: [PATCH 5/5] virtio: Add bounce DMA ops | From | Jan Kiszka <> | Date | Wed, 29 Apr 2020 12:55:56 +0200 |
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On 29.04.20 12:45, Michael S. Tsirkin wrote: > On Wed, Apr 29, 2020 at 12:26:43PM +0200, Jan Kiszka wrote: >> On 29.04.20 12:20, Michael S. Tsirkin wrote: >>> On Wed, Apr 29, 2020 at 03:39:53PM +0530, Srivatsa Vaddagiri wrote: >>>> That would still not work I think where swiotlb is used for pass-thr devices >>>> (when private memory is fine) as well as virtio devices (when shared memory is >>>> required). >>> >>> So that is a separate question. When there are multiple untrusted >>> devices, at the moment it looks like a single bounce buffer is used. >>> >>> Which to me seems like a security problem, I think we should protect >>> untrusted devices from each other. >>> >> >> Definitely. That's the model we have for ivshmem-virtio as well. >> >> Jan > > Want to try implementing that? >
The desire is definitely there, currently "just" not the time.
Jan
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