Re: [PATCH 3/4] AHCI: Conserve interrupts withpci_enable_msi_block_part() interface

[Tejun Heo]

Hello,

On Wed, Sep 04, 2013 at 09:22:57AM +0200, Alexander Gordeev wrote:
> I think a general approach that will cover it all (including ICH and undesired
> sharing of interrupt vectors) - start MME from roundup_pow_of_two(n_ports) and
> ensure MRSM bit is unset. If not - double MME and retry. If still not and the
> limit is reached - fall back to single MSI.
> 
> Makes sense?

Ugh... I really don't want this sort of retry loop.  I'm still a bit
lost on why this is necessary.  Can you please elaborate?

Thanks.

-- 
tejun
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