Re: fio execution issue on Android device with MediaTek

[David Nellans <david@nellans.org>]

what -march are you actually compiling for and under what distro?


On 06/19/2014 04:25 PM, David N wrote:
> Hi David,
>
> Yes, it's mt6572 with armv7 rev 3. I didn't do any changes to fio.
> Just pulled the latest version, compiled, and pushed the binary to the
> device. I tried the same binary on Samsung S4 with qualcomm, and it
> worked fine.
>
> Thanks,
> -David Nguyen
>
> On Thu, Jun 19, 2014 at 2:13 PM, David Nellans <david@nellans.org> wrote:
>> I may have actually spoken prematurely - if the krait version is running v7a
>> and compiles for armeabi-v7a
>> but the mt6572 is only supports armeabi you could run into ABI issues.
>> either way, still very unlikely its a fio issue.
>>
>>
>> On 06/19/2014 04:04 PM, David Nellans wrote:
>>> generally speaking taking a pre-compiled binary from one machine to
>>> another is a dicey proposition
>>> but in this case you're moving from a krait 400? which runs armv7 to the
>>> MT6572 which is a cortex A-7
>>> which are the same ISA rev.  are you running the exact same distro and/or
>>> set of libs on them too?
>>> changes there in glibc, will cause issues. cross compiling for x86
>>> certainly isn't going to fix your problems!
>>>
>>> just for good measure I did just compile and run fio tip on a tegra k1
>>> running ubuntu 13.04 (3.10.33 kern)
>>> and it seems to be working just fine. have you managed to get anything at
>>> all to work via this method?
>>> i doubt its an issue specific to fio.
>>>
>>> - the real David N
>>>
>>> On 06/19/2014 03:39 PM, David N wrote:
>>>> Hi all,
>>>>
>>>> I got fio working fine on a device with Qualcomm Snapdragon but
>>>> executing that same compiled binary gave me "sh: ./fio: not
>>>> executable: magic 7F45" on a MediaTek (MT6572) device.
>>>>
>>>> I tried to recompile both for ARM and x86 but still the same issue.
>>>> The binary is executable (did chmod it), so I'm not sure what is
>>>> causing this. I'd very much appreciate any input.
>>>>
>>>> Thanks much!
>>>> David
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>>>