On Thu, Feb 20, 2014 at 10:26:45PM +0000, Matthew Garrett wrote: > On Thu, 2014-02-20 at 16:06 -0600, Russ Anderson wrote: > > On Thu, Feb 20, 2014 at 09:39:23PM +0000, Matthew Garrett wrote: > > > On Thu, 2014-02-20 at 15:28 -0600, Russ Anderson wrote: > > > > > > > For some customers _any_ amount is significant, especially > > > > on large clustered systems where the amount is multiplied > > > > by tens or hundreds of thousands of nodes. > > > > > > > > You many not think wasting their cpu cycles is important, but they do. > > > > > > Then they should be running locally built kernels in order to ensure > > > > Why don't YOU run a locally built kernel? > > Because I'm trying to ensure that the default behaviour of the kernel is > to *work*. Defaulting to having IPMI be modular means that the default > behaviour of the kernel, as far as the ACPI spec goes, is to be broken. The ACPI spec requires IPMI functionality before a module loads at boot time? And the kernel is *broken* if it does not support ACIP IPMI functionality before module load time? Really? > >> If you have specific bug reports, that would be helpful. But you're not > > > describing actual failure conditions or showing any willingness to > > > figure out what the underlying problem is. > > > > You can't fix your problem without creating problems for > > others to fix? > > ACPI 4.0 includes support for IPMI operation regions. Modular IPMI means > that the kernel will spend a significant amount of time (potentially > until a user manually loads a driver) failing to implement part of the > IPMI specification. That's a problem, and the correct fix is to ensure > that the kernel always implements IPMI support. The ACPI spec says ipmi_si cannot be a driver? Really? What is the real problem you are trying to solve? > Now, you've described some other problems. I don't disagree that those > are problems. The correct thing for us to do with those problems is to > fix them, not to simply change the kernel defaults such that it's > possible for users to choose between two differently broken states. I'm > absolutely willing to help, as long as you're willing to put some > reasonable amount of effort into describing them. How about ACPI IPMI functionality starts when the ipmi_si module loads at boot time. -- Russ Anderson, Kernel and Performance Software Team Manager SGI - Silicon Graphics Inc rja@xxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
