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[Mathew Hodson <mathew.hodson@xxxxxxxxx>]

** CVE removed: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2010-4249

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https://bugs.launchpad.net/bugs/667796

Title:
  kernel only recognizes 32G of memory

Status in linux package in Ubuntu:
  Invalid
Status in linux-ec2 package in Ubuntu:
  Invalid
Status in linux source package in Maverick:
  Fix Released
Status in linux-ec2 source package in Maverick:
  Invalid

Bug description:
  SRU justification:

  Impact: The config option XEN_MAX_DOMAIN_MEMORY controls how much
  memory a Xen instance is seeing. The default for 64bit is 32GB, which
  is the reason that m2.4xlarge instances only report this amount of
  memory.

  Fix: Setting this limit to 70GB as there is a known restriction for
  t1.micro instances at about 80GB.

  Testcase: Booted m2.4xlarge with this set to 32GB shows 32GB of
  memory, when set to 70GB, it correctly reports 68GB. Booted a t1.micro
  as well to verify this has not caused problems there.

  ---

  The following is copied from
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/651370/comments/14
  .  I'm fairly sure that The problem is also with a stock image
  (without the additional command line options suggested in that bug).

  Brandon's and Scott's workaround works for me partly, but the kernel
  on an instance started in such a way seems to detect only 32 GB of
  memory even for a m2.4xlarge instance which should have 68.4 GB
  available, according to the EC2 instances page. Is this a side-effect
  of the workaround, or a completely separate bug?

  Maveric results:
  ubuntu@ip-10-230-9-87:~$ uname -a
  Linux ip-10-230-9-87 2.6.35-22-virtual #35-Ubuntu SMP Sat Oct 16 23:19:29 UTC 2010 x86_64 GNU/Linux
  ubuntu@ip-10-230-9-87:~$ ec2metadata --instance-type
  m2.4xlarge
  ubuntu@ip-10-230-9-87:~$ free
               total used free shared buffers cached
  Mem: 32810684 667628 32143056 0 6444 32152
  -/+ buffers/cache: 629032 32181652
  Swap: 0 0 0

  Expected results (from a SUSE 11 guest):
  ip-10-230-45-187:~ # uname -a
  Linux ip-10-230-45-187 2.6.32.19-0.3-ec2 #1 SMP 2010-09-17 20:28:21 +0200 x86_64 x86_64 x86_64 GNU/Linux
  ip-10-230-45-187:~ # curl http://169.254.169.254/latest/meta-data/instance-type
  m2.4xlarge
  ip-10-230-45-187:~ # free
               total used free shared buffers cached
  Mem: 71705116 2361584 69343532 0 10972 126424
  -/+ buffers/cache: 2224188 69480928
  Swap: 0 0 0

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: linux-image-2.6.35-22-virtual 2.6.35-22.33
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: User Name 2.6.35-22.33-virtual 2.6.35.4
  Uname: Linux 2.6.35-22-virtual x86_64
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  CurrentDmesg:

  Date: Thu Oct 28 13:35:42 2010
  Ec2AMI: ami-548c783d
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-east-1d
  Ec2InstanceType: t1.micro
  Ec2Kernel: aki-427d952b
  Ec2Ramdisk: unavailable
  Lspci:

  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  ProcCmdLine: root=LABEL=uec-rootfs ro console=hvc0
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcModules: acpiphp 18752 0 - Live 0xffffffffa0000000
  SourcePackage: linux

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