linux-kernel - Re: [PATCH v3] selftests/seccomp: build and pass on arm64

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Message-ID: <56205C57.3070406@osg.samsung.com>
Date:	Thu, 15 Oct 2015 20:09:27 -0600
From:	Shuah Khan <shuahkh@....samsung.com>
To:	Kees Cook <keescook@...omium.org>
Cc:	AKASHI Takahiro <takahiro.akashi@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Andy Lutomirski <luto@...capital.net>,
	Will Drewry <wad@...omium.org>,
	Linux API <linux-api@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH v3] selftests/seccomp: build and pass on arm64

On 10/15/2015 05:02 PM, Kees Cook wrote:
> On Thu, Oct 15, 2015 at 4:01 PM, Shuah Khan <shuahkh@....samsung.com> wrote:
>> On 10/15/2015 05:00 PM, Shuah Khan wrote:
>>> On 10/15/2015 04:07 PM, Kees Cook wrote:
>>>> On Thu, Oct 15, 2015 at 1:06 PM, Shuah Khan <shuahkh@....samsung.com> wrote:
>>>>> On 10/15/2015 12:42 PM, Kees Cook wrote:
>>>>>> On Thu, Oct 15, 2015 at 7:07 AM, Shuah Khan <shuahkh@....samsung.com> wrote:
>>>>>>> On 10/06/2015 01:30 PM, Kees Cook wrote:
>>>>>>>> Changing arm64 syscalls is done via a specific register set, more like s390
>>>>>>>> than like arm (specific ptrace call) and x86 (part of general registers).
>>>>>>>> Since (restarting) poll doesn't exist on arm64, switch to using nanosleep
>>>>>>>> for testing restart_syscall. And since it looks like the syscall ABI is
>>>>>>>> inconsistent on arm-compat, so we must work around it (and document it) in
>>>>>>>> the test.
>>>>>>>>
>>>>>>>> Signed-off-by: Kees Cook <keescook@...omium.org>
>>>>>>>> ---
>>>>>>>> v3:
>>>>>>>>  - correctly set syscall number on native arm64.
>>>>>>>> v2:
>>>>>>>>  - switch to nanosleep from a bad mix of poll and ppoll for testing restart.
>>>>>>>> ---
>>>>>>>
>>>>>>> Is this good to go? Failed to apply to linux-kselftest next.
>>>>>>> If you can rebase and resend. I can get this into 4.4-rc1
>>>>>>
>>>>>> Yes please. :)
>>>>>>
>>>>>
>>>>> ok. Please rebase to linux-kselftest next and resend the patch.
>>>>
>>>> Am I looking at the right tree? linux-kselftest#next doesn't appear to
>>>> have the s390 patch that was included in 4.3.
>>>>
>>>
>>> I see what happened. Your patch is linux-next fixes and that went into
>>> 4.3-rc2. I can get linux-next rebase to 4.3-rc2 and get your patch in.
>>> Thanks for clearing this up.
>>
>> oops rebase linux-kselftest next i.e
> 
> Okay, cool. Let me know if I need to do anything more. :)
> 

Applied to linux-ksefltest next for 4.4-rc1

thanks,
-- Shuah


-- 
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@....samsung.com | (970) 217-8978
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