Forwarding to build-dev for wider review. -------- Forwarded Message -------- Subject: [RFR] 8217753: Enable HotSpot builds on 5.x Linux kernels Date: Mon, 11 Mar 2019 07:24:48 +0000 From: Andrew John Hughes <gnu.and...@redhat.com> To: 'jdk8u-...@openjdk.java.net' <jdk8u-...@openjdk.java.net>
Bug: https://bugs.openjdk.java.net/browse/JDK-8217753 Webrev: https://cr.openjdk.java.net/~andrew/openjdk8/8217753/webrev.01/ This is 8u and below only as it's part of the old HotSpot build replaced in 9+. There's a check in make/linux/Makefile to ensure that a 2.4 or later kernel is being used. This has been extended by JDK-7072341 to accommodate Linux 3.x and JDK-8074312 for 4.x. 5.x is now imminent [0] and the build is broken again [1]. Given that 2.4 was released over 18 years ago [2], I think now is the time to just get rid of this check rather than bumping it yet again. If anyone is really trying to build OpenJDK 8 on a 2.2 kernel, I suspect they will encounter other issues than a Makefile check, and it seems far more likely that, if we just add a '5%' check, someone is going to build with Linux 6.x in a few years and hit this same bug again. [0] https://lwn.net/Articles/776034/ [1] https://bugs.gentoo.org/675920 [2] http://lkml.iu.edu/hypermail/linux/kernel/0101.0/0776.html -- Andrew :) Senior Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) PGP Key: ed25519/0xCFDA0F9B35964222 (hkp://keys.gnupg.net) Fingerprint = 5132 579D D154 0ED2 3E04 C5A0 CFDA 0F9B 3596 4222 https://keybase.io/gnu_andrew
