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Date: Fri, 30 May 2008 12:43:39 +0200 From: "Hemmann, Volker Armin" <volker.armin.hemmann@...clausthal.de> To: Tejun Heo <htejun@...il.com> Cc: Peer Chen <pchen@...dia.com>, Jeff Garzik <jeff@...zik.org>, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org, Kuan Luo <kluo@...dia.com> Subject: Re: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3 On Freitag, 30. Mai 2008, Tejun Heo wrote: > 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. this is correct. > The controller is not reporting NCQ capability in its cap register > (flags: line contains ncq if the controller is), so NCQ is not enabled. ah, I thought all AHCI chipsets support NCQ (and the board's handbook lists it as feature) thanks for the explanation. Glück Auf, Volker -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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