| To: | Ralf Baechle <ralf@oss.sgi.com> |
|---|---|
| Subject: | Re: test machines; illegal instructions |
| From: | Jun Sun <jsun@mvista.com> |
| Date: | Sun, 7 Oct 2001 10:03:47 -0700 |
| Cc: | jim@jtan.com, "H . J . Lu" <hjl@lucon.org>, linux-mips@oss.sgi.com |
| In-reply-to: | <20011007033910.C4228@dea.linux-mips.net>; from ralf@oss.sgi.com on Sun, Oct 07, 2001 at 03:39:10AM +0200 |
| References: | <20010926221223.A17628@neurosis.mit.edu> <20010926202610.B7962@lucon.org> <20011004011632.A19472@neurosis.mit.edu> <3BBDF25F.1A0F2283@mvista.com> <20011007033910.C4228@dea.linux-mips.net> |
| Sender: | owner-linux-mips@oss.sgi.com |
| User-agent: | Mutt/1.2.5i |
On Sun, Oct 07, 2001 at 03:39:10AM +0200, Ralf Baechle wrote: > On Fri, Oct 05, 2001 at 10:48:15AM -0700, Jun Sun wrote: > > > If your cpu does not have ll/sc instruction, you might be suffering the > > famous > > sysmips() problem. The latest kernel should get you going. > > > > There is also FPU emulation bug which may cause this problem, but that only > > happens on heavy context switches and FPU usages. > > I've checked in a major bundle of FPU emu fixes last week. The kernel > fp code should now produce accurate results and handle exceptions and > the Flush to Zero bit as per spec. > This particular problem seems still there. Anybody can try the following test program on a CPU *without* fpu. Jun
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