** Also affects: linux (Ubuntu Zesty)
Importance: Critical
Assignee: Manoj Iyer (manjo)
Status: Incomplete
** Changed in: linux (Ubuntu Zesty)
Status: Incomplete => Fix Committed
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https://bugs.launchpad.net/bugs/1675046
Title:
[ARM64] Support systems where the physical memory footprint exceeds
the size of the linear mapping.
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Bug description:
[Impact]
Kernel might fail booting on systems where the physical memory footprint
exceeds the size of the linear mapping. The following patches addresses this
issue:
[v2,1/2] efi: arm-stub: Correct FDT and initrd allocation rules for arm64
https://patchwork.kernel.org/patch/9565537/
[v2,2/2] efi: arm-stub: Round up FDT allocation to mapping size
https://patchwork.kernel.org/patch/9565539
[Testing]
These patches were regression tested. Patches were applied to Zesty latest
and boots on a KVM instance and on QDF2400 ARM64 Qualcomm server. At this time
do not have systems with high memory to test with.
[Regression Potential]
Changes are confined to ARM architecture, patches apply cleanly to
Ubuntu-4.10.0-13.15. Potential for any regression is low.
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