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[Bug 436895] Samsung R510 reboots on x86_64 - disabling ACPI components or mem=4GB helps
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 16 Jan 2009 01:09:21 -0700 (MST)
  • Message-id: <20090116080921.97C20CC7D5@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=436895

User herrmarder@xxxxxxxxxxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=436895#c40





--- Comment #40 from Tobias Lippert <herrmarder@xxxxxxxxxxxxxx> 2009-01-16
01:09:19 MST ---
If I look at my dmesg output I see

BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009e400 (usable)
BIOS-e820: 000000000009e400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved)
BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 00000000bf8a1000 (usable)
BIOS-e820: 00000000bf8a1000 - 00000000bf8a7000 (reserved)
BIOS-e820: 00000000bf8a7000 - 00000000bf9b4000 (usable)
BIOS-e820: 00000000bf9b4000 - 00000000bfa0f000 (reserved)
BIOS-e820: 00000000bfa0f000 - 00000000bfb07000 (usable)
BIOS-e820: 00000000bfb07000 - 00000000bfd0f000 (reserved)
BIOS-e820: 00000000bfd0f000 - 00000000bfd18000 (usable)
BIOS-e820: 00000000bfd18000 - 00000000bfd1f000 (reserved)
BIOS-e820: 00000000bfd1f000 - 00000000bfd65000 (usable)
BIOS-e820: 00000000bfd65000 - 00000000bfd9f000 (ACPI NVS)
BIOS-e820: 00000000bfd9f000 - 00000000bfe00000 (ACPI data)
BIOS-e820: 0000000100000000 - 0000000140000000 (usable)
user-defined physical RAM map:
user: 0000000000000000 - 000000000009e400 (usable)
user: 000000000009e400 - 00000000000a0000 (reserved)
user: 00000000000d2000 - 00000000000d4000 (reserved)
user: 00000000000dc000 - 0000000000100000 (reserved)
user: 0000000000100000 - 00000000bf8a1000 (usable)
user: 00000000bf8a1000 - 00000000bf8a7000 (reserved)
user: 00000000bf8a7000 - 00000000bf9b4000 (usable)
user: 00000000bf9b4000 - 00000000bfa0f000 (reserved)
user: 00000000bfa0f000 - 00000000bfb07000 (usable)
user: 00000000bfb07000 - 00000000bfd0f000 (reserved)
user: 00000000bfd0f000 - 00000000bfd18000 (usable)
user: 00000000bfd18000 - 00000000bfd1f000 (reserved)
user: 00000000bfd1f000 - 00000000bfd65000 (usable)
user: 00000000bfd65000 - 00000000bfd9f000 (ACPI NVS)
user: 00000000bfd9f000 - 00000000bfe00000 (ACPI data)

0xbfe00000 == 3GB. This is what I have available.

BIOS-e820: 0000000100000000 - 0000000140000000 (usable)
is missing in the user-defined physical RAM map.
0x140000000-0x100000000=0x40000000= 1073741824 = 1GB
This could be the missing Gigabyte of ram. Right after the ACPI data.

Perhaps this could be a hint to where the memory went.

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