From mboxrd@z Thu Jan 1 00:00:00 1970 In-Reply-To: Date: Fri, 10 Mar 2000 14:14:34 +0100 To: Gabriel Paubert , linuxppc-dev@lists.linuxppc.org From: Benjamin Herrenschmidt Subject: Re: patch to get latest XFree 4.0 snapshot (xf3918) to work on pp cwith r128 Message-Id: <20000310141434.019878@mailhost.mipsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Fri, Mar 10, 2000, Gabriel Paubert wrote: >What do you mean with x100 ? Is it a series of PMAC models ? sync and >eieio perform an address-only bus broadcast that should be terminated by >the host bridge but never to the PCI bus so they can't crash HW. Is the >host bridge/memory controller really that buggy ? Those machines are also known as the NuBus PowerMacs. The adress only cycle is broadcast on their bus and makes some of Apple's AV cards crash. >And isync is not irrelevant on any processor since a) it flushes the >instruction queue and b) it ensures that the effect of all previous >instructions on machine state is taken into account before the next >instruction executes (that's important if you change context by changing >segment registers or modify some MSR bits). ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/