Messages in this thread | | | Date | Mon, 7 Nov 2011 22:09:34 +0200 (EET) | From | Pekka Enberg <> | Subject | Re: [Qemu-devel] [PATCH] KVM: Add wrapper script around QEMU to test kernels |
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On Mon, 7 Nov 2011, Frank Ch. Eigler wrote: >> The ABI design allows for that kind of flexible extensibility, and >> it's one of its major advantages. >> >> What we *cannot* protect against is you relying on obscure details of >> the ABI [...] > > Is there some documentation that clearly spells out which parts of the > perf syscall userspace ABI are "obscure" and thus presumably > changeable?
That's actually something the KVM and virtio folks have done a great job with IMHO. Both ABIs are documented pretty extensively and the specs are kept up to date.
I guess for perf ABI, "perf test" is the closest thing to a specification so if your application is using something that's not covered by it, you might be in trouble.
Pekka
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