[Bug 189269] [NEW] CONFIG_HIMEM4G does not allow 4gb of ram in kernel

Andrew Barbaccia andrew at monolithmc.com
Tue Feb 5 15:34:58 UTC 2008

Public bug reported:

This problem occurs in all gutsy -generic kernels and feisty -generic

I have a system with 4GB ram installed. The BIOS correctly identifies
all 4GB.

When booting into the -generic kernel only 2GB shows up in
/proc/meminfo. Looking at the kernel configuration CONFIG_HIMEM4G=y is
set so all 4GB should be identified.

After recompiling the -generic kernel with CONFIG_HIMEM64G=y and
removing CONFIG_HIMEM4G=y, /proc/meminfo appropriately displays all 4GB.

This should be fixed as many systems are now shipping with 4GB of ram or
allowing upgrades to 4gb.

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

CONFIG_HIMEM4G does not allow 4gb of ram in kernel
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