** No longer affects: linux
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: intel
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1801245
Title:
[AE{]Prevent any ARS attempts when capabilities are clear
Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
Description
The v4.17 ARS reworks broke the kernel's honoring of "no ARS capability"
responses from the BIOS. The kernel unconditionally schedules ARS for all PMEM
regions. Fix up the implementation to fail all ARS when no capability is
present.
Ideally the BIOS would just not publish the DSMs, for ARS, but we
should handle capabilities being present or not regardless.
Target Kernel: 4.20
Target Release: 19.04
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