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SubjectRe: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3
Hello,

Hemmann, Volker Armin wrote:
> -AHCI+nomsi: boots fine. Works fine. But: I still can not enable ncq
> -AHCI+msi: the usual. No harddisks found, waiting for the timeouts, then
> kernel panic because of missing root.
>
> -NON-RAID/IDE+msi: works fine. No delays. No NCQ (not surprising since mobos
> handbook says that AHCI mode is required).
> -NON-RAID/IDE+nomsi: see above.

So, sans NCQ, the only remaining issue is MSI, right? Peer Chen, please
lemme know which controllers are affected by this MSI problem and where
the problem lies.

> but:
> [14315325.624510] ahci 0000:00:0a.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps
> 0xf impl SATA mode
> [14315325.624559] ahci 0000:00:0a.0: flags: 64bit sntf led clo pmp pio
>
> shouldn't controller and harddisks support turning on NCQ? The handbooks says
> that NCQ is supported in AHCI mode and the harddisks doesn't seem to be
> blacklisted.

The controller is not reporting NCQ capability in its cap register
(flags: line contains ncq if the controller is), so NCQ is not enabled.

Thanks.

--
tejun


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