Michael Ellerman <[EMAIL PROTECTED]> writes: > 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.
Yep. That is pretty much what I expected. Since you already have to detect how to implement the MSI methods you need a separate white list anyway. Just a side note. This only needs to be enabled for pci root busses. Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
