Re: 4Gb memory?

[Hakona Spect]

$/sbin/lspci
00:00.0 Host bridge: Intel Corp. 82860 860 (Wombat) Chipset Host Bridge 
(MCH) (rev 04)
00:01.0 PCI bridge: Intel Corp. 82850 850 (Tehama) Chipset AGP Bridge (rev 
04)
00:02.0 PCI bridge: Intel Corp. 82860 860 (Wombat) Chipset AGP Bridge (rev 
04)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 04)
00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 04)
00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 04)
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 04)
00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 04)
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 04)
00:1f.5 Multimedia audio controller: Intel Corp. 82801BA/BAM AC'97 Audio 
(rev 04)
01:00.0 VGA compatible controller: nVidia Corporation NV25GL [Quadro4 700 
XGL] (rev a3)
02:1f.0 PCI bridge: Intel Corp. 82806AA PCI64 Hub PCI Bridge (rev 03)
03:00.0 PIC: Intel Corp. 82806AA PCI64 Hub Advanced Programmable Interrupt 
Controller (rev 01)
04:0b.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 
78)
04:0c.0 FireWire (IEEE 1394): Texas Instruments TSB12LV26 IEEE-1394 
Controller (Link)


> From: Zwane Mwaikambo <zwane@xxxxxxxxxxxxxxxx>
> To: Hakona Spect <ear22@xxxxxxxxxxx>
> CC: linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: 4Gb memory?
> Date: Mon, 27 Oct 2003 16:10:18 -0500 (EST)
>
> On Mon, 27 Oct 2003, Hakona Spect wrote:
>
> > Hi, I just installed 4GB memory to my system. In BIOS it shows up all 
> 8x512M
> > chips. But after boot it shows:
> >
> > $ free
> >              total       used       free     shared    buffers     
> cached
> > Mem:       3753328     566800    3186528          0      96040     
> 189960
> > -/+ buffers/cache:     280800    3472528
> > Swap:      2096440          0    2096440
> >
> > $dmesg
> > Linux version 2.4.22 (root) (gcc version 3.2.2 20030222 (Red Hat Linux
> > 3.2.2-5)) #1 SMP Mon Oct 27 12:44:16 EST 2003
> > BIOS-provided physical RAM map:
> > BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
> > BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
> > BIOS-e820: 0000000000100000 - 000000007ff77000 (usable)
> > BIOS-e820: 000000007ff77000 - 000000007ff79000 (ACPI NVS)
> > BIOS-e820: 000000007ff79000 - 00000000e7f77000 (usable)
> > BIOS-e820: 00000000e7f79000 - 00000000e8000000 (reserved)
> > BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
> > BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
> > BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
> > user-defined physical RAM map:
> > user: 0000000000000000 - 00000000000a0000 (usable)
> > user: 00000000000f0000 - 0000000000100000 (reserved)
> > user: 0000000000100000 - 000000007ff77000 (usable)
> > user: 000000007ff77000 - 000000007ff79000 (ACPI NVS)
> > user: 000000007ff79000 - 00000000e7f77000 (usable)
> > user: 00000000e7f79000 - 00000000e8000000 (reserved)
> > user: 00000000fec00000 - 00000000fec10000 (reserved)
> > user: 00000000fee00000 - 00000000fee10000 (reserved)
> > user: 00000000ffb00000 - 0000000100000000 (reserved)
> > 2815MB HIGHMEM available.
> > 896MB LOWMEM available.
>
> Which motherboard? Some boards will reserve some of the area between ~3.7
> and 4G for various option roms and other devices present in the system.
> Resulting in "lost" physical RAM.

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