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

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Message-ID: <CAGXu5jKXeu-kBie+wJODoAjoK1kX+ScFRSn0s3s_wvN+sHT1yw@mail.gmail.com>
Date:	Thu, 15 Oct 2015 11:42:52 -0700
From:	Kees Cook <keescook@...omium.org>
To:	Shuah Khan <shuahkh@....samsung.com>
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>
Subject: Re: [PATCH v3] selftests/seccomp: build and pass on arm64

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. :)

Thanks!

-Kees

-- 
Kees Cook
Chrome OS Security
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