JDK-8274770 : [PPC64] resolve_jobject needs a generic implementation to support load barriers
Type:Bug
Component:hotspot
Sub-Component:gc
Affected Version:17,18
Priority:P4
Status:Resolved
Resolution:Fixed
CPU:ppc
Submitted:2021-10-05
Updated:2021-10-18
Resolved:2021-10-12
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed. Resolved: Release in which this issue/RFE has been resolved. Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
BarrierSetAssembler::resolve_jobject is not compatible with new GCs which use load barriers. The standard implementation should be generic.
Comments
Fix Request (17u):
Prerequisite for backport of ZGC or ShenandoahGC on PPC64. Current implementation of resolve_jobject misses load barriers which are required for these GCs. Only touches PPC64 code. Applies cleanly.