From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cpout1.tiscali.be (cpout1.tiscali.be [62.235.13.193]) by dsl2.external.hp.com (Postfix) with ESMTP id D7D66483F for ; Fri, 29 Aug 2003 01:28:47 -0600 (MDT) Date: Fri, 29 Aug 2003 09:27:27 +0200 Message-ID: <3F4D78B00000007F@ocpmta3.freegates.net> In-Reply-To: <012d01c36d82$40d6c960$f463f40f@jh733133> From: "Joel Soete" Subject: RE: [parisc-linux] Re: [parisc-linux-cvs] linux carlos To: "Jim Hull" , parisc-linux@lists.parisc-linux.org MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: Hi Jim, Well come :) > I haven't really been following this thread, so I don't know what >problem you're actually trying to solve, but I'd like to point out a few >aspects of the PA-RISC processor architecture. > To be short, the pa linux kernel boot well on A model as SMP (Multiprocessor mode) but panic on L/N model. And a pb in tlb management is suspected. >Comments mixed with the original text, below. > > -- Jim > >> HP Itanium/PA-RISC Processor Architect >If you use fdc, fic, or pdc, then they are broadcast to other >processors, but fdce and fice are not. Thanks I will check if such a code is used. >While you can use ldda and stda to access memory using absolute >(physical) addresses instead of virtual, these instructions do *not* >bypass the cache. And because PA processors use virtually-indexed >caches, the rules for mixing virtual and absolute accesses, and have >them all remain cache-coherent, are complicated. If you really need to >do this, then you'll have to read and understand all of Appendix F, "TLB >and Cache Control", in the PA-RISC 2.0 Architecture manual (the "Kane" >book). Yes, very accurate reference, but imo it is not a course on PA-RISC asm (I mean, as a beginner, as i am, would like to find with some trial example showing what is good and trivial errors to not commit). Thanks for your clear comments, Joel ------------------------------------------------------------------------- Tiscali ADSL, seulement 35 eur/mois et le modem est inclus...abonnez-vous! http://reg.tiscali.be/default.asp?lg=fr