netdev - Re: [PATCH RFC] sparc64: eBPF JIT

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Date:   Fri, 21 Apr 2017 21:19:37 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     alexei.starovoitov@...il.com
Cc:     sparclinux@...r.kernel.org, netdev@...r.kernel.org, ast@...nel.org,
        daniel@...earbox.net
Subject: Re: [PATCH RFC] sparc64: eBPF JIT

From: Alexei Starovoitov <alexei.starovoitov@...il.com>
Date: Tue, 18 Apr 2017 15:57:09 -0700

> Alternative idea: can the above
> 'add FP, STACK_BIAS, one_of_local_regs' be done once in prologue
> and that register used as substitue for R10 ?

After much consideration I think this is what I'm going to end up
doing, I should have listened to you from the beginning :-)

It will simplify the JIT significantly.

Now I will just have to completely trust that the verifier has audited
all the FP accesses properly. :-)