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SubjectRe: linux-next: Tree for June 13: IO APIC breakage on HP nx6325
On Tuesday, 17 of June 2008, Maciej W. Rozycki wrote:
> On Tue, 17 Jun 2008, Rafael J. Wysocki wrote:
> > May I gently ask that the patch ("x86: I/O APIC: timer through 8259A second-chance")
> > be reverted?
> We're trying to find a solution for a long-standing problem and this
> patch is a step in that direction. We need to find out exactly what is
> going wrong with the HP nx6325 system and removing the patch would make us
> lose the opportunity to get things right in this area. At the time I
> submitted that patch I warned a lot of testing would be required before it
> goes upstream and hopefully my request will get honored. If you do not
> want to participate in testing for whatever reason, you have the right to
> do so, but I insist on the patch to stay at least until we know the source
> of the problem and conclude there is no other way to get it fixed. Len
> reported he's got the same system and it behaves the same, so I hope he'll
> be able to do the testing if you decide to opt out.

I can do the testing actually, but IMO putting that patch into linux-next was a

> Unfortunately the 64-bit variation has a lot of necessary logging
> disabled by default (as you have now discovered with the need to rename
> apic_printk() to printk()), so my plan is to cook up a patch to enable all
> the available logging facilities around that code first.

Well, that's easy. I can send you a dmesg output with all of the printk()s in
there functional if that helps, but frankly I don't see how this is going to
get you more information than I've already posted.


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