| To: | "H. J. Lu" <hjl@lucon.org> |
|---|---|
| Subject: | Re: Kernel ll/sc emulation? |
| From: | Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de> |
| Date: | Tue, 2 Jul 2002 18:33:13 +0200 |
| Cc: | Eric Christopher <echristo@redhat.com>, bkoz@redhat.com, linux-mips@oss.sgi.com |
| In-reply-to: | <20020701192415.A2617@lucon.org> |
| References: | <1025548213.1438.7.camel@ghostwheel.cygnus.com> <20020701122313.35d7dd56.bkoz@redhat.com> <1025562305.28484.1.camel@ghostwheel.cygnus.com> <20020701153438.A31602@lucon.org> <1025568244.30577.16.camel@ghostwheel.cygnus.com> <20020701182418.A1600@lucon.org> <1025574335.30581.44.camel@ghostwheel.cygnus.com> <20020701185158.A2134@lucon.org> <1025574717.30577.48.camel@ghostwheel.cygnus.com> <20020701192415.A2617@lucon.org> |
| Sender: | owner-linux-mips@oss.sgi.com |
| User-agent: | Mutt/1.3.28i |
H. J. Lu wrote: > On Mon, Jul 01, 2002 at 06:51:57PM -0700, Eric Christopher wrote: > > > > > What do you meant by "it'll be emulated if it fails"? I didn't see any > > > ll/sc emulation in the Linux mips kernel. If you use ll/sc on CPU which > > > doesn't implement ll/sc, your binary will just dump core. > > > > The kernel should trap and emulate the instruction at that point, at > > least as far as I've been told. > > > > That is a news to me. I couldn't find it anywhere in the Linux mips > kernel. Could someone point me to the right place in the Linux mips > kernel source tree? grep -rI LLSC arch/mips/kernel HTH, Thiemo |
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