RE: [Xen-users] FIXED!!! amd64 system only seeing 3.5gb instead of 4gb of memory

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> >
> > (XEN) Command line: /xen-3.1.0-1-amd64.gz
> > (XEN)  0000000000000000 - 000000000009f000 (usable)
> > (XEN)  0000000000100000 - 00000000dfff0000 (usable)
> > (XEN) System RAM: 3583MB (3669564kB)
> > (XEN) Xen heap: 13MB (14176kB)
> > (XEN) Domain heap initialised: DMA width 32 bits
> 
> So that tells us that Xen is doing exactly what the BIOS/Grub says -
and
> of course, GRUB does things differently for Xen and a normal Linux
> distro, simply because it's using a different model of booting.

I applied the patch mentioned here
"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=419994"; and rebooted,
and now xm dmesg says:

"
(XEN) Command line: /xen-3.1.0-1-amd64.gz
(XEN)  0000000000000000 - 000000000009f000 (usable)
(XEN)  000000000009fc00 - 00000000000a0000 (reserved)
(XEN)  00000000000e0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000dfff0000 (usable)
(XEN)  00000000dfff0000 - 00000000dfffe000 (ACPI data)
(XEN)  00000000dfffe000 - 00000000e0000000 (ACPI NVS)
(XEN)  00000000fec00000 - 00000000fec01000 (reserved)
(XEN)  00000000fee00000 - 00000000fef00000 (reserved)
(XEN)  00000000ff780000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000120000000 (usable)
(XEN) System RAM: 4095MB (4193852kB)
"

Which is a much healthier looking memory map, and I'm now seeing the
right amount of memory!

The fix makes me think that the bug is a bit heisenbug-ish... but it
works for me.

James


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