linux-kernel - Re: [PATCH v2] arm: eBPF JIT compiler

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Message-ID: <CAHgaXdJ+++AKL7YbtZcOunnLpTG3R6Om-H3gxxvhb4_y-HRHFA@mail.gmail.com>
Date:   Wed, 31 May 2017 00:20:01 +0530
From:   Shubham Bansal <illusionist.neo@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Russell King - ARM Linux <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v2] arm: eBPF JIT compiler

Hi Russell,

I tried everything I could to run a ARMv6 machine in last 4 days but I
am not able to. If nobody is willing to test the code no there
machine, may be we should not merge the code.
I have been more than happy to assist anyone who want to test it but
it looks like other people don't need it. I guess, it was a wasted
effort.

I don't have anything more to offer in regarding to this patch.
Thank you.

Best,
Shubham Bansal


On Fri, May 26, 2017 at 10:27 PM, Shubham Bansal
<illusionist.neo@...il.com> wrote:
> Hi Andrew,
>
> Did you get the time to test the code with CONFIG_FRAME_POINTER? It
> would be great if you could check if it works on ARMv5 so that Russell
> can look at the patch.
>
> Thanks.
> Best,
> Shubham Bansal
>
>
> On Fri, May 26, 2017 at 5:06 AM, Shubham Bansal
> <illusionist.neo@...il.com> wrote:
>> Just to add. It a very very small part which deal with
>> CONFIG_FRAME_POINTER just one move instruction.
>> Best,
>> Shubham Bansal
>>
>>
>> On Fri, May 26, 2017 at 5:04 AM, Shubham Bansal
>> <illusionist.neo@...il.com> wrote:
>>> Hi Andrew,
>>>
>>> Oh. I didn't knew. Can you test it now and confirm it? I think it will
>>> work and wouldn't take much of the time.
>>>
>>> Please.
>>> Best,
>>> Shubham Bansal
>>>
>>>
>>> On Fri, May 26, 2017 at 4:53 AM, Andrew Lunn <andrew@...n.ch> wrote:
>>>>> Tested on ARMv7 with QEMU by me (Shubham Bansal).
>>>>> Tested on ARMv5 by Andrew Lunn (andrew@...n.ch).
>>>>> Expected to work on ARMv6 as well, as its a part ARMv7 and part ARMv5.
>>>>> Although, a proper testing is not done for ARMv6.
>>>>>
>>>>> Both of these testing are done with and without CONFIG_FRAME_POINTER
>>>>> separately for LITTLE ENDIAN machine.
>>>>
>>>> Nope. I only tested it in the default configuration of mvebu_v5_defconfig.
>>>> Please change the 'Both' to 'Some'.
>>>>
>>>>       Andrew