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Out of MTRRs at boot

Fresh3 days ago
Mar 15, 20266296 views
Confidence Score0%
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Problem

It seems my laptop (an Acer Aspire One AOA150) runs out of MTRRs at boot. I've done some googling on the problem and read that people recommend turning on MTRR sanitizing to fix it, however, it still occurs. I'm running Arch Linux (but that shouldn't matter). You can see that I have enabled MTRR sa…

Error Output

[chris@helios ~]$ zgrep 'SANITIZER' /proc/config.gz
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
CONFIG_MTRR_SANITIZER_SPARE_REG_NR…

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix for: Out of MTRRs at boot

Low Risk

Thanks to harrymc, I discovered that you can actually rewrite /proc/mtrr. I put the following in /etc/rc.local, rebooted, and my MTRR table was correct. Also, after talking to a few people that are involved with kernel development, I have been infor…

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Environment