netdev - Re: [RFC PATCH 0/3] RV64G eBPF JIT

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Message-ID: <alpine.DEB.2.21.9999.1901251147250.20864@viisi.sifive.com>
Date:   Fri, 25 Jan 2019 11:54:25 -0800 (PST)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Björn Töpel <bjorn.topel@...il.com>
cc:     linux-riscv@...ts.infradead.org, palmer@...ive.com,
        davidlee@...ive.com, daniel@...earbox.net, netdev@...r.kernel.org
Subject: Re: [RFC PATCH 0/3] RV64G eBPF JIT

Hi,

thanks for taking a shot at the eBPF JIT; this will be very useful.

On Tue, 15 Jan 2019, Björn Töpel wrote:

> * I've added "HAVE_EFFICIENT_UNALIGNED_ACCESS" to
>   arch/riscv/Kconfig. Is this assumption correct?

From a hardware point of view, this is not the case on the Linux-capable 
RISC-V ASICs that the public can buy right now (to the best of my 
knowledge this is only the SiFive FU540).

So I'd recommend not including this for now.

- Paul