JDK-8255065 : Zero: accessor_entry misses the IRIW case
- Type: Bug
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 8,11,15,16
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- Submitted: 2020-10-20
- Updated: 2020-11-11
- Resolved: 2020-10-21
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| JDK 11 | JDK 15 | JDK 16 |
|---|---|---|
| 11.0.10Fixed | 15.0.2Fixed | 16 b21Fixed  |
Description
While doing a change in related area, I noticed there is no IRIW handling block in accessor_entry when reading volatile fields. This probably breaks PPC64 Zero.
There is a block in bytecodeInterpreter.cpp for common code:
if (cache->is_volatile()) {
if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
OrderAccess::fence();
}
AFAIU, this mostly affects 8u that does not have PPC64 port yet.
Comments
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