Re: interrupts on APs

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Wed, Dec 07, 2011 at 04:05:34AM +0000, YAMAMOTO Takashi wrote:
> only think i'm aware of is the "no_irq_affinity" quirk for E7520/7320/7525.
> from their comment:
> 
>         /* BIOS may enable hardware IRQ balancing for
>          * E7520/E7320/E7525(revision ID 0x9 and below)
>          * based platforms.
>          * Disable SW irqbalance/affinity on those platforms.
>          */
> 
> can anyone test on those hardware?

Tested on a Dell poweredge 2850 with 2 Xen 3,2Ghz (single-core, hyperthread)
with:
pchb0 at pci0 dev 0 function 0
pchb0: Intel E7525 Memory Controller Hub (rev. 0x09)
ppb0 at pci0 dev 2 function 0: Intel E7525 PCI Express Port A (rev. 0x09)

Boot fails with obvious interrupts issues (messages from ehci controller
which looks like timeouts; 'lost interrupts' from cmdide).
With plain GENERIC from HEAD, there's no such issues.

So this is one platform where it fails.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--