Re: [patch] PCI Express Enhanced Config Patch - 2.6.0-test11

From: Grant Grundler
Date: Sat Jan 31 2004 - 23:43:41 EST


On Sat, Jan 31, 2004 at 02:57:29PM -0700, Eric W. Biederman wrote:
> Is it really safe to treat the base address as a u32?

Sorry...I missed this in the code...but the following confuses me:

> I know
> if I was doing the BIOS and that address was tied to a 32bit BAR I
> would be extremely tempted to put those 256M of address space above
> 4G.

uhmm, how can one put a 32-bit BAR above 4G?
You meant 64-bit BAR?

> Point being I don't think it is safe to assume the BIOS always puts
> the extended PCI configuration space below 4G.

where MMCONFIG lives is orthogonal to where BARs point to.
I'm pretty sure I missed the point...sorry.

grant
-
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/