Re: PCI oddities on Dell Inspiron 5000e w/ 2.4.x

Philipp Rumpf (
Sat, 24 Feb 2001 09:54:47 -0600

On Sat, Feb 24, 2001 at 05:36:47AM -0800, Linus Torvalds wrote:
> On Sat, 24 Feb 2001, Jeff Lessem wrote:
> >
> > >Also, how much memory does this machine have? That "13ff0000" does worry
> > >me a bit..
> >
> > The comptuer has 320MB. At this point I am ready to conclude that the
> > computer is broken in some way, because nobody else with an Inspiron
> > 5000e that I have heard from has anything like this problem.

> I didn't believe that you'd have 320MB just because it's such an odd
> number, but the problem is that Linux apparently starts allocating the PCI
> address space just _under_ the 320MB mark (you probably have some memory
> reserved for ACPI that doesn't show up in the e820 memory map).

Jeff, are you using the e820 memory map at all ? In particular, are you
using grub or some other buggy bootloader that insists on specifying a
mem= option on the kernel command line ? There should be a kernel command
line message very early on, what does that say ?

Also, can you give us the E820 memory map (kernel messages starting with
BIOS-e820) ?
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