linux-kernel - Re: [PATCH] LinuxPPS (with new syscalls API)

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Message-ID: <20070628081538.GP13886@enneenne.com>
Date:	Thu, 28 Jun 2007 10:15:38 +0200
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] LinuxPPS (with new syscalls API)

On Thu, Jun 28, 2007 at 09:08:53AM +0100, David Woodhouse wrote:
> On Thu, 2007-06-28 at 00:46 +0200, Rodolfo Giometti wrote:
> > Just last question: I still don't well understand where I should
> > declare the new compat_sys_time_pps_fetch() syscall... it's
> > automagically defined by the system when CONFIG_COMPAT is enabled? :-o
> 
> It isn't used on i386. On a 64-bit architecture, you need to put
> compat_sys_time_pps_fetch() into the syscall table for 32-bit
> processes. 
> 
> On PowerPC you do this by using COMPAT_SYS_SPU(time_pps_fetch) instead
> of SYSCALL_SPU(..) in include/asm-powerpc/systbl.h. On x86_64 you'd put
> it into the ia32_sys_call_table in arch/x86_64/ia32/ia32entry.S

I see.

Do you think I should add these functions into my patch, even if I
cannot test it, or it's enought providing just the
compat_sys_time_pps_fetch() function?

Thanks,

Rodolfo

-- 

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