---------- Forwarded message ---------- From: Dave Martin dave.martin@linaro.org Date: Thu, Apr 14, 2011 at 5:01 PM Subject: Re: Is VFP or Neon supported in kernel-side code? <EOM> To: Tixy tixy@yxit.co.uk
Is VFP or Neon supported in kernel-side code?
Currently, no.
There is some possible future work to see if we can enable this, to allow acceleration of some number-crunching algorithms in the kernel, but it's not implemented yet.
For now, I think it's reasonable simply to reject attempts to insert kprobes on VFP/NEON instructions (as we must for cp15). I think that these instructions are never used at the entry/exit points of compiler-generated functions -- in any case, we build the kernel with -msoft-float, so actually the compiler should never implicitly generate these instructions at all.
Cheers ---Dave
On Thu, Apr 14, 2011 at 2:21 PM, Tixy tixy@yxit.co.uk wrote:
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