From: Thomas Fjellstrom <thomas@fjellstrom.ca>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: Andreas Hartmann <andihartmann@01019freenet.de>,
linux-kernel@vger.kernel.org
Subject: Re: missing 700 MB of RAM
Date: Sun, 21 Nov 2010 21:55:59 -0700 [thread overview]
Message-ID: <201011212156.00189.thomas@fjellstrom.ca> (raw)
In-Reply-To: <4CE9A5D0.4080701@gmail.com>
On November 21, 2010, Jiri Slaby wrote:
> On 11/21/2010 08:02 PM, Andreas Hartmann wrote:
> > I've got 8 GB RAM installed, but linux reports 7,3 GB. Where is the
> > missing RAM (700 MB)?
>
> ...
>
> > The motherboard is a GA-MA78GM-S2H (64bit, AMD) with a on board Radeon
> > HD 3200 VGA card. The card uses 256 MB of RAM - so 444 MB of RAM are
> > missing. Where are they gone?
>
> Hi, ask your BIOS:
> > BIOS-provided physical RAM map:
> > BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
> > BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
> > BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
> > BIOS-e820: 0000000000100000 - 00000000afde0000 (usable)
> > BIOS-e820: 00000000afde0000 - 00000000afde3000 (ACPI NVS)
> > BIOS-e820: 00000000afde3000 - 00000000afdf0000 (ACPI data)
> > BIOS-e820: 00000000afdf0000 - 00000000afe00000 (reserved)
> > BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
> > BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
> > BIOS-e820: 0000000100000000 - 0000000230000000 (usable)
>
> It reports 7677M of usable mem. Or maybe your loader is cheating on you?
> I doubt so...
>
> regards,
I've got the same board, It doesn't seem my map is missing more than a few MB
out of 2G (gfx reservation is 128MB)
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
[ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 0000000077de0000 (usable)
[ 0.000000] BIOS-e820: 0000000077de0000 - 0000000077de3000 (ACPI NVS)
[ 0.000000] BIOS-e820: 0000000077de3000 - 0000000077df0000 (ACPI data)
[ 0.000000] BIOS-e820: 0000000077df0000 - 0000000077e00000 (reserved)
[ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
I'm using the F5 bios if it helps any.
--
Thomas Fjellstrom
thomas@fjellstrom.ca
next prev parent reply other threads:[~2010-11-22 4:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-21 19:02 missing 700 MB of RAM Andreas Hartmann
2010-11-21 23:05 ` Jiri Slaby
2010-11-22 4:55 ` Thomas Fjellstrom [this message]
2010-11-22 23:26 ` Yinghai Lu
[not found] <fRnsu-1X9-15@gated-at.bofh.it>
[not found] ` <fRrcJ-8j1-3@gated-at.bofh.it>
2010-11-22 21:58 ` Andreas Hartmann
2010-11-22 22:37 ` Jiri Slaby
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