Bug #33

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

Added by Martin Roth over 3 years ago. Updated over 3 years ago.

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

0%

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Description

This has been going on for a while. Paul mentioned it here:
https://www.coreboot.org/pipermail/coreboot/2015-September/080383.html

History

#1 Updated by Aaron Durbin over 3 years ago

This has a little more succinct issue as to what is going on:
https://www.coreboot.org/pipermail/coreboot/2015-October/080568.html

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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