Mikael Pettersson wrote:

> On Wed, 31 Jan 2001 10:01:08 -0500, Adam Schrotenboer wrote:
> 
>>> On Tue, 30 Jan 2001 23:25:22 -0500, Adam Schrotenboer wrote:
>>> 
>>>> 2.4.1 detects 64 MB, but 2.4.0 detects 192 (Maybe 191, not sure).
>>>> ...
>>>> Linux version 2.4.1 (root@tabriel) (gcc version egcs-2.91.66 
>>> 
>> 19990314/Linux (egcs-1.1.2 release)) #9 Tue Jan 30 15:35:21 EST 2001
>> 
>>>> BIOS-provided physical RAM map:
>>>> BIOS-88: 000000000009f000 @ 0000000000000000 (usable)
>>>> BIOS-88: 0000000003ff0000 @ 0000000000100000 (usable)
>>>> On node 0 totalpages: 16624
>>> 
>> ...
>> Linux version 2.4.0 (root@tabriel) (gcc version pgcc-2.95.2 19991024 (release)) #2 Mon Jan 8 09:02:27 EST 2001
>> BIOS-provided physical RAM map:
>> BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
>> BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved)
>> BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved)
>> BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved)
>> BIOS-e820: 000000000bef0000 @ 0000000000100000 (usable)
>> BIOS-e820: 000000000000d000 @ 000000000bff3000 (ACPI data)
>> BIOS-e820: 0000000000003000 @ 000000000bff0000 (ACPI NVS)
>> On node 0 totalpages: 49136
> 
> 
> Your 2.4.1 kernel is really sick. According to this, your bios
> does support E820 and 2.4.0 picks it up correctly. 2.4.1 for
> some reason doesn't. I've looked through the 2.4.1 patch and
> I cannot see anything which could cause this (the one memory
> detection patch there only applies to the legacy bios-88 call).

> 
> Besides, 2.4.1 obviously works for the majority of users.
> 
> All I can suggest is to recompile 2.4.1 from pristine sources
> (make mrproper or get a fresh tarball), using a known safe
> compiler and absolutely no strange patches or CFLAGS overrides.
> 
> /Mikael
> 

It did it again. fresh tree, egcs 1.1.2, etc

dmesg and .config attached.