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Type: Bug
Resolution: Fixed
Priority: P4
Fix Version/s: 15
Affects Version/s: 15
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b25
CPU:

aarch64

Running application with option "-XX:+UseBarriersForVolatile" might have memory consistent issue like that mentioned in ~~JDK-8241137~~. Since "ldar/stlr" can work well stably, we'd better simply things by removing this flag and the alternative implementation for volatile memory access.

More detail discussion could be found from the two threads:
http://mail.openjdk.java.net/pipermail/aarch64-port-dev/2020-March/008679.html
http://mail.openjdk.java.net/pipermail/aarch64-port-dev/2020-April/008706.html

csr for

JDK-8243456 AArch64: Obsolete UseBarriersForVolatile option

Closed

duplicates

JDK-8241137 AArch64: Volatile accesses are not sequentially consistent with VM option "-XX:+UseBarriersForVolatile"

Closed

JDK-8242469 [aarch64] Remove UseBarriersForVolatile support for T88 variant 0

Closed

Assignee:: Xiaohong Gong

Reporter:: Xiaohong Gong

Votes:: 0 Vote for this issue

Watchers:: 5 Start watching this issue

Created:: 2020-04-21 23:03

Updated:: 2024-10-02 11:10

Resolved:: 2020-05-27 00:18