On 03/11/2015 08:13 PM, Julian Elischer wrote:
On 3/11/15 8:39 AM, Oliver Pinter wrote:
On Wed, Mar 11, 2015 at 4:26 PM, Adrian Chadd <adr...@freebsd.org> wrote:
Hm, have you tried with just one TB of RAM? I haven't had access to
systems with 3TB of RAM - I'm just about to get 1TB in a box. :)
Hm, other hackers - what's the current size of the AMD64 direct map?
4TB -
https://github.com/freebsd/freebsd/blob/master/sys/amd64/include/vmparam.h#L157
yeah but since direct-map is, well, directly mapped, you might have 3TB
of ram but it might be spread over a larger range.
there may be holes in it.. it would be worth knowing the apparent
layout of the ram.
is it this you are looking for (from OpenSUSE 13.2)?
http://dedi3.fuckner.net/~molli123/temp/dmesg.smp.disabled.txt
http://dedi3.fuckner.net/~molli123/temp/dmesg-s4l_opensuse13.2.txt
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x00000000000997ff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000099800-0x000000000009ffff]
reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff]
reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000784affff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000784b0000-0x0000000078c63fff]
reserved
[ 0.000000] BIOS-e820: [mem 0x0000000078c64000-0x0000000078ca6fff]
ACPI data
[ 0.000000] BIOS-e820: [mem 0x0000000078ca7000-0x000000007a268fff]
ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x000000007a269000-0x000000007bdc3fff]
reserved
[ 0.000000] BIOS-e820: [mem 0x000000007bdc4000-0x000000007bdc4fff] usable
[ 0.000000] BIOS-e820: [mem 0x000000007bdc5000-0x000000007be4afff]
reserved
[ 0.000000] BIOS-e820: [mem 0x000000007be4b000-0x000000007bffffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000080000000-0x000000008fffffff]
reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff]
reserved
[ 0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff]
reserved
[ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000003007fffffff] usable
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