Date: Fri, 2 Feb 2001 12:27:54 +0200 From: Peter Pentchev <roam@orbitel.bg> To: John Baldwin <jhb@FreeBSD.org> Cc: Doug White <dwhite@resnet.uoregon.edu>, freebsd-hackers@FreeBSD.org, Drew Eckhardt <drew@PoohSticks.ORG>, Matt Dillon <dillon@earth.backplane.com> Subject: Re: Suboptimal mmap of devices on i86 Message-ID: <20010202122754.F328@ringworld.oblivion.bg> In-Reply-To: <XFMail.010201131924.jhb@FreeBSD.org>; from jhb@FreeBSD.org on Thu, Feb 01, 2001 at 01:19:24PM -0800 References: <Pine.BSF.4.21.0102011242120.853-100000@resnet.uoregon.edu> <XFMail.010201131924.jhb@FreeBSD.org>
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On Thu, Feb 01, 2001 at 01:19:24PM -0800, John Baldwin wrote:
>
> On 01-Feb-01 Doug White wrote:
> > On Mon, 29 Jan 2001, John Baldwin wrote:
> >
> >> Then only rename it in 4.x We can do an API change for 5.0. We'll be
> >> renaming syscall2() back to syscall() in 5.0 for example. We don't
> >> want to end up with syscall47() someday in FreeBSD 67.2. :-P
> >
> > And what happens to apps using the previous syscall(2) interface? They
> > die horribly? That's not acceptable.
>
> Huh? syscall2() is an internal kernel function. The only thing that might
> call it is a kernel module, and we won't support 4.x KLD's on 5.0. Period.
> It was renamed to syscall2() to cause old KLD's to fail to load with a symbol
> lookup problem back when teh MPSAFE flag was first added to x86 syscalls. The
> only thing that changing it back to syscall() in -current does is cause any 6
> month old 5.0-current KLD's that happen to call syscall() to call it wrong.
Uhm.. I believe he meant syscall(2) as in 'the "syscall" entity described
in section 2 of the manual', which in this case happens to be:
NAME
syscall, __syscall - indirect system call
..as used in src/lib/libc/sys/*.c.
G'luck,
Peter
--
If this sentence were in Chinese, it would say something else.
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