[8u] RFR 8266749: AArch64: Backtracing broken on PAC enabled systems

[Alan Hayward]

Thanks.

I’ve now added the fix request to the bug (https://bugs.openjdk.java.net/browse/JDK-8266749)
I should have done that before.

Requesting approval and then sponser please.



Alan.

On 30 Jun 2021, at 17:37, Hohensee, Paul <hohensee at amazon.com<mailto:hohensee at amazon.com>> wrote:

Lgtm.

Thanks,
Paul

-----Original Message-----
From: jdk8u-dev <jdk8u-dev-retn at openjdk.java.net<mailto:jdk8u-dev-retn at openjdk.java.net>> on behalf of Alan Hayward <Alan.Hayward at arm.com<mailto:Alan.Hayward at arm.com>>
Date: Tuesday, June 29, 2021 at 2:34 AM
To: "jdk8u-dev at openjdk.java.net<mailto:jdk8u-dev at openjdk.java.net>" <jdk8u-dev at openjdk.java.net<mailto:jdk8u-dev at openjdk.java.net>>
Subject: [8u] RFR 8266749: AArch64: Backtracing broken on PAC enabled systems

Hi,
I’d like to backport this fix.

Webrev: http://cr.openjdk.java.net/~ahayward/8266749/webrev/

On fedora 33 (and onwards), openJDK is build with PAC enabled on Aarch64.
This patch is required to make the backtracking work.

Tested manually on Fedora 33 on a PAC system (VM on M1 Mac)

Applied cleanly from TIP version, except for
* Files moved into VM directories
* New Windows and Mac files removed from patch.

I also have an 11u version awaiting review here: https://github.com/openjdk/jdk11u-dev/pull/39


(First time using webrev and back porting, so apologies if I’ve missed something)


Thanks,
Alan.
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