Re: [Broken] PCI: clean up resource alignment management

[Linus Torvalds]

On Tue, 22 Apr 2008, Linus Torvalds wrote:
> 
> (In fact, I think cardbus bridges have a much more flexible alignment than 
> that size thing, and can be aligned at finer granularity, but I forget the 
> exact details, and since we didn't add a special "alignment" field, we 
> can't take advantage of it anyway).

Yeah, I double-checked: the IO alignment is 4 bytes, the MEM alignment is 
4k.

So if we had a separate alignment word we could use that, but in the 
meantime I think IORESOURCE_SIZEALIGN is good enough, and a bit more 
readable than the STARTALIGN thing.

Now we just need to have somebody test it. It turns out that I no longer 
have any Cardbus cards, since my laptops now all have built-in wireless. 
Boo hiss for me.

			Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/