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Type: Bug
Resolution: Fixed
Priority: P2
Fix Version/s: 20
Affects Version/s: 20
Component/s: hotspot
Labels:
- oracle-triage-20
- oraclejdk-na

Subcomponent:
compiler
Introduced In Version:

19
Resolved In Build:
b17
CPU:

riscv
OS:

linux

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8311722	17.0.9	Fei Yang	P2	Resolved	Fixed	b01

With RVC turning on, we must carefully keep all runtime-patchable instructions aligned. Code is running at full speed, when patching unaligned instructions spanning cache lines, concurrency issues may occur. This patch fixes a potential alignment issue of the patchable nop after MachUEPNode, with adding some strong alignment assertions as well.

backported by

JDK-8311722 RISC-V: RVC: Fix a potential alignment issue and add more alignment assertions for the patchable calls/nops

Resolved

links to

Commit openjdk/jdk17u-dev/966fc82d

Commit openjdk/jdk/a216960d

Commit(riscv-port) openjdk/riscv-port-jdk11u/2bdf5d2f

Review openjdk/jdk17u-dev/1427

Review openjdk/jdk/10370

Review openjdk/riscv-port-jdk11u/22

Review openjdk/riscv-port-jdk17u/14

Review(riscv-port) openjdk/riscv-port-jdk11u/40

(4 links to)

Assignee:: Xiaolin Zheng

Reporter:: Xiaolin Zheng

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2022-09-20 20:44

Updated:: 2024-10-16 07:11

Resolved:: 2022-09-22 04:46

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