linux-kernel - Re: [PATCH v2 0/5] MIPS: BPF: JIT fixes and improvements.

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Message-ID: <20170314224946.GA11983@ast-mbp.thefacebook.com>
Date:   Tue, 14 Mar 2017 15:49:47 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     David Daney <david.daney@...ium.com>
Cc:     linux-mips@...ux-mips.org, ralf@...ux-mips.org,
        James Hogan <james.hogan@...tec.com>,
        Alexei Starovoitov <ast@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Steven J. Hill" <steven.hill@...ium.com>
Subject: Re: [PATCH v2 0/5] MIPS: BPF: JIT fixes and improvements.

On Tue, Mar 14, 2017 at 02:21:39PM -0700, David Daney wrote:
> Changes from v1:
> 
>   - Use unsigned access for SKF_AD_HATYPE
> 
>   - Added three more patches for other problems found.
> 
> 
> Testing the BPF JIT on Cavium OCTEON (mips64) with the test-bpf module
> identified some failures and unimplemented features.
> 
> With this patch set we get:
> 
>      test_bpf: Summary: 305 PASSED, 0 FAILED, [85/297 JIT'ed]
> 
> Both big and little endian tested.
> 
> We still lack eBPF support, but this is better than nothing.
> 
> David Daney (5):
>   MIPS: uasm:  Add support for LHU.
>   MIPS: BPF: Add JIT support for SKF_AD_HATYPE.
>   MIPS: BPF: Use unsigned access for unsigned SKB fields.
>   MIPS: BPF: Quit clobbering callee saved registers in JIT code.
>   MIPS: BPF: Fix multiple problems in JIT skb access helpers.

Thanks. Nice set of fixes. Especially patch 4.
Did you see crashes because of it?
Acked-by: Alexei Starovoitov <ast@...nel.org>