On Thu, 2007-05-24 at 22:19 -0600, Eric W. Biederman wrote: > Currently we blacklist known bad msi configurations which means we > keep getting MSI enabled on chipsets that either do not support MSI, > or MSI is implemented improperly. Since the normal IRQ routing > mechanism seems to works even when MSI does not, this is a bad default > and causes non-functioning systems for no good reason. > > So this patch inverts the sense of the MSI bus flag to only enable > MSI on known good systems. I am seeding that list with the set of > chipsets with an enabled hypertransport MSI mapping capability. Which > is as close as I can come to an generic MSI enable. So for actually > using MSI this patch is a regression, but for just having MSI enabled > in the kernel by default things should just work with this patch > applied.
I guess this is a good idea for random x86 machines. On powerpc I think we'll just turn it on for every bus, and let the existing per-platform logic decide. cheers -- Michael Ellerman OzLabs, IBM Australia Development Lab wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183) We do not inherit the earth from our ancestors, we borrow it from our children. - S.M.A.R.T Person
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