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From: Andreas Schwab <schwab@suse.de>
To: "Zhangjian \(Bamvor\)" <bamvor.zhangjian@huawei.com>
Cc: Yury Norov <ynorov@caviumnetworks.com>, <libc-alpha@sourceware.org>,
        <linux-kernel@vger.kernel.org>, <arnd@arndb.de>,
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        <pinskia@gmail.com>, Andrew Pinski <apinski@cavium.com>
Subject: Re: [PATCH 26/27] [AARCH64] Change type of __align to long long
References: <1466485631-3532-1-git-send-email-ynorov@caviumnetworks.com>
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	<57691D91.6080204@huawei.com>
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Date: Wed, 06 Jul 2016 12:36:40 +0200
In-Reply-To: <57691D91.6080204@huawei.com> (Zhangjian's message of "Tue, 21
	Jun 2016 18:57:21 +0800")
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"Zhangjian (Bamvor)" <bamvor.zhangjian@huawei.com> writes:

> Hi, Yury
>
> On 2016/6/21 13:07, Yury Norov wrote:
>> From: Andrew Pinski <apinski@cavium.com>
>>
>> So that ILP32 is aligned to 64bits.
>>
>> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
>> ---
>>   sysdeps/aarch64/nptl/bits/semaphore.h | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/sysdeps/aarch64/nptl/bits/semaphore.h b/sysdeps/aarch64/nptl/bits/semaphore.h
>> index 3cc5b37..3fe6047 100644
>> --- a/sysdeps/aarch64/nptl/bits/semaphore.h
>> +++ b/sysdeps/aarch64/nptl/bits/semaphore.h
>> @@ -31,5 +31,5 @@
>>   typedef union
>>   {
>>     char __size[__SIZEOF_SEM_T];
>> -  long int __align;
>> +  long long int __align;
> Why we need align to 64bit?

Because aarch64 defines __HAVE_64B_ATOMICS.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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