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Subject: Re: Linux 2.4.21-pre3-ac4
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Alan Cox <alan@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Sun, 2003-01-12 at 21:40, Alan Cox wrote:
> On Sun, 2003-01-12 at 19:51, Benjamin Herrenschmidt wrote:
> > What about PCI write posting ? How can we enforce the 400ns delay here ?
> 
> For i/o space it is ok as in*/out* are synchronous. For mmio right now I
> don't know. I need to talk to Andre about that for SATA. I guess for the
> PPC its going to be fun

Thinking about it, it might make sense to provide an hwif->IOSYNC iop along
with {IN/OUT}{B,W,L} that would be a no-op by default for that.

Ben.


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