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Re: check & reprogram PCI BAR
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On Jan 19, 2010, at 1:57 PM, David Young wrote:
On Tue, Jan 19, 2010 at 12:57:57PM +0100, Manuel Bouyer wrote:
On Tue, Jan 19, 2010 at 12:50:55PM +0100, Christoph Egger wrote:
Why are the *FIXUP options disabled by default in x86 kernels?
Because on some systems it reprograms the BARs in a way which doesn't
work. I'm not sure the kernel can do this in a reasonable and safe
way anyway, it would need detailled knowledge of the hardware,
which may not be available.
What detailed knowledge do you have in mind?
Some machines have hardware registers, ROM etc. overlap with PCI space
which don't show up in any BAR.
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