Bug #33

cbmem utility fails on newer linux kernels "Failed to mmap /dev/mem: Resource temporarily unavailable"

Added by Martin Roth almost 6 years ago. Updated almost 6 years ago.

Status:NewStart date:02/05/2016
Priority:NormalDue date:
Assignee:-% Done:


Target version:-


This has been going on for a while. Paul mentioned it here:


#1 Updated by Aaron Durbin almost 6 years ago

This has a little more succinct issue as to what is going on:

In short, smbios and ACPI memory both live in cbmem. However, the two drivers use 2 different map() attributes covering sub regions within cbmem. The cbmem utility currently assumes a cacheable mapping attribute which is in conflict w/ the persistent uncacheable smbios mapping.

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