Re: [PATCH] [RFC] syscalls,x86: Add execveat() system call (v2)

From: H. Peter Anvin
Date: Wed Aug 01 2012 - 19:33:09 EST


On 08/01/2012 04:30 PM, H. Peter Anvin wrote:
> On 08/01/2012 04:09 PM, Meredydd Luff wrote:
>>>> #
>>>> # x32-specific system call numbers start at 512 to avoid cache impact
>>>
>>> I think that should be common, not 64 (as should kcmp be).
>>
>> I copied the original execve, which is 64.
>>
>
> Sorry, you're right. The argument vector needs compatibility support.
>
> This means you need an x32 version of the function -- execve
> unfortunately is one of the few system calls which require a special x32
> version (although it's a simple wrapper around sys32_execve). See
> sys_x32_execve.
>

Err, stub_x32_execve.

-hpa

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