Hi Steve, from my experience the situation is similar to Linux (small performance change).
Best regards, Matthias From: Steve Groeger <groe...@uk.ibm.com> Sent: Mittwoch, 16. Januar 2019 10:49 To: Baesken, Matthias <matthias.baes...@sap.com> Cc: 'build-dev@openjdk.java.net' <build-dev@openjdk.java.net>; ppc-aix-port-...@openjdk.java.net; ppc-aix-port-dev <ppc-aix-port-dev-boun...@openjdk.java.net> Subject: Re: RFR [XS] 8217233: Update build settings for AIX/xlc Hi Matthias, The change looks OK. The docs state: "This option is disabled by default because it can cause performance degradation." Do you know whether using this option actually causes any performance degradation on AIX? Thanks Steve Groeger IBM Runtime Technologies Hursley, Winchester Tel: (44) 1962 816911 Mobex: 279990 Mobile: 07718 517 129 Fax (44) 1962 816800 Lotus Notes: Steve Groeger/UK/IBM Internet: groe...@uk.ibm.com<mailto:groe...@uk.ibm.com> Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU From: "Baesken, Matthias" <matthias.baes...@sap.com<mailto:matthias.baes...@sap.com>> To: "'build-dev@openjdk.java.net'" <build-dev@openjdk.java.net<mailto:build-dev@openjdk.java.net>>, "ppc-aix-port-...@openjdk.java.net<mailto:ppc-aix-port-...@openjdk.java.net>" <ppc-aix-port-...@openjdk.java.net<mailto:ppc-aix-port-...@openjdk.java.net>> Date: 16/01/2019 09:26 Subject: RFR [XS] 8217233: Update build settings for AIX/xlc Sent by: "ppc-aix-port-dev" <ppc-aix-port-dev-boun...@openjdk.java.net<mailto:ppc-aix-port-dev-boun...@openjdk.java.net>> ________________________________ Hello, please review this small fix . It adds stack protection compile flags for xlc/AIX . See : https://www.ibm.com/support/knowledgecenter/SSGH2K_12.1.0/com.ibm.xlc121.aix.doc/compiler_ref/opt_stackprotect.html "Provides protection against malicious code or programming errors that overwrite or corrupt the stack." The patch will set the stack protection flags . ( Similar changes have been done for Linux : 8199552: Update to build scripts https://hg.openjdk.java.net/jdk-updates/jdk11u/rev/8b060cdf0251 Introduced stack protection compile flags for Linux/gcc ( -fstack-protector ) . ) Bug/webrev : https://bugs.openjdk.java.net/browse/JDK-8217233 http://cr.openjdk.java.net/~mbaesken/webrevs/8217233.0/ Thanks, Matthias Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
