RFR: 8277204: Implement PAC-RET branch protection on Linux/AArch64 [v21]

[Alan Hayward]

On Fri, 11 Feb 2022 16:48:33 GMT, Andrew Haley <aph at openjdk.org> wrote:

> This is looking pretty nice now. With the check for -XX:-UseFramePointer argument consistency we're done.

Excellent! I'm away all next week, so will add the check when I get back.

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PR: https://git.openjdk.java.net/jdk/pull/6334