As Ashok Raj has already responded, there was support for APIC-based MSI[-X]
on ia64 before my patches. I personally do not know if it worked or not, my
suspicion is that it didn't get much airtime due to MSI being off by default
until somewhat recently.
I believe MSI was working on zx1 after my patch, so I suspect it worked there
before my patch as well. I can't speak to MSI-X.
Mike, is your driver capable of MSI (vs. MSI-X)? As a datapoint, could you
try that?
Mark
On Mon, Jan 30, 2006 at 09:38:52AM -0800, Greg KH wrote:
> On Mon, Jan 30, 2006 at 10:33:50AM -0600, Miller, Mike (OS Dev) wrote:
> > Greg KH,
> > We have the same results on 2.6.15, the MSI-X table is all zeroes. See
> > below. Any ideas of what to do do next? The driver works on x86_64. Is
> > there any thing extra I need to do on ia64?
>
> ia64 didn't really have msi support before the latest -mm kernel, right
> Mark?
>
> > Andrew, can you try 2.6.16-rc1 and/or the rc1-git4 kernels?
>
> How about the -mm kernel?
>
> thanks,
>
> greg k-h
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