[systemd-devel] [PATCH] Fix broken syscall(__NR_fanotify_mark... on 32bit mips.

[fykcee1 at gmail.com]

2011/4/21 David Daney <ddaney at caviumnetworks.com>:
> On 04/20/2011 06:02 PM, fykcee1 at gmail.com wrote:
>>
>> 2011/4/21 David Daney<ddaney at caviumnetworks.com>:
>>>>
>>>> Any comment whether this will break non-MIPS 32bit archs, like x86?
>>>
>>> It would break the MIPS n32 ABI userspace.
>>>
>>> On MIPS n32 we are still __LP64__, but 64-bit values are passed in a
>>> single
>>> register.
>>
>> It isn't a problem. n32 syscall supports 64bit registers, and 64-bit
>> values should be passed in a single register. see
>> http://lxr.linux.no/linux+v2.6.38/arch/mips/kernel/scall64-n32.S#L426
>> (calls sys_fanotify_mark instead of sys_32_fanotify_mark,
>> sys_fanotify_mark won't merge_64(mask_low, merge_high))
>>
>
> What are you talking about?
Sorry, misunderstand it, on "n32", __LP64__ won't be defined, right?



-- 
Regards,
- cee1