Friday, 2018-05-04

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kata-dev-irc-bot<jonolson> gVisor doesn’t really replace Kata, fwiw — it’s not really a kernel of its own, so some of the things Kata lets you do (e.g., sandbox the kernel bits of a vendor GPU driver blob) gVisor can’t do. In terms of stability, it’s used for _a lot_ in Google prod today, although not with the KVM or ptrace runtimes.01:40
kata-dev-irc-bot<jonolson> Also, nit re: gofers — there are a family of them (and they all speak 9p)01:40
kata-dev-irc-bot<jonolson> On the other hand for something like DPDK it is indeed a good fit — if you can get the resources it needs inside the sandbox (in particular by providing, e.g., a VFIO gofer that forces the device into an IOMMU group that constrains it to the sandbox’s resources) then you can have a very thoroughly sandboxed packet processing engine (fantastic if you’re dealing with potentially hostile data) that never has to make a syscall.01:44
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kata-dev-irc-bot<eric.ernst> Thanks for the details, @jonolson.  Yeah, I'm pretty curious to checkout the plumbing on that DPDK use case.  That is, when I have some time.13:49
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