Re: question regarding cacheline size
From: Tejun Heo
Date: Thu Sep 07 2006 - 07:17:33 EST
Matthew Wilcox wrote:
Just call pci_set_mwi(), that'll make sure the cache line size is set
correctly.
Sounds simple enough. Just two small worries though.
* It has an apparent side effect of setting PCI_COMMAND_INVALIDATE,
which should be okay in sil3124's case.
* The controller might have some restrictions on configurable cache line
size. This is the same for MWI, so I guess this problem is just imaginary.
For the time being, I'll go with pci_set_mwi() but IMHO it would be
better to have a pci helper for this purpose -
pci_config_cacheline_size() or something.
Thanks.
--
tejun
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