Linus Torvalds wrote:
>
> On Tue, 17 Dec 2002, Linus Torvalds wrote:
>
>>Hmm.. Which system calls have all six parameters? I'll have to see if I
>>can find any way to make those use the new interface too.
>
>
> The only ones I found from a quick grep are
> - sys_recvfrom
> - sys_sendto
> - sys_mmap2()
> - sys_ipc()
>
> and none of them are of a kind where the system call entry itself is the
> biggest performance issue (and sys_ipc() is deprecated anyway), so it's
> probably acceptable to just use the old interface for them.
>
recvfrom() and sendto() can also be implemeted as sendmsg() recvmsg() if
one really wants to.
What one can also do is that a sixth argument, if one exists, is passed
on the stack (i.e. in (%ebp), since %ebp contains the stack pointer.)
-hpa
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This archive was generated by hypermail 2b29 : Mon Dec 23 2002 - 22:00:17 EST