March 2016 - aarch64-port-dev

[PATCH] [jdk8u] Remove unused template which breaks builds with GCC 6
by Andrew Hughes 15 May '16

15 May '16

Webrev: http://cr.openjdk.java.net/~andrew/aarch64-8/gcc6/webrev.01/ The min template: template <class T> static const T& min (const T& a, const T& b) causes the build to fail with GCC 6 [0], where the default C++ standard (-std=gnu++98) has to be explicitly specified, as the default has changed. /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.72-5.b15.fc24.aarch64/openjdk/hotspot/src/share/vm/utilities/globalDefinitions.hpp:1113:18: warning: variable templates only available with -std=c++14 or -std=gnu++14 #define min(a,b) Do_not_use_min_use_MIN2_instead ^ /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.72-5.b15.fc24.aarch64/openjdk/hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp:197:36: note: in expansion of macro 'min' template <class T> static const T& min (const T& a, const T& b) { ^~~ /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.72-5.b15.fc24.aarch64/openjdk/hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp:198:3: error: expected ';' before 'return' return (a > b) ? b : a; ^~~~~~ /builddir/build/BUILD/java-1.8.0-openjdk-1.8.0.72-5.b15.fc24.aarch64/openjdk/hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp:199:1: error: expected declaration before '}' token } ^ The template appears to be unused and removing it allows the build to succeed with GCC 6. Ok to push? [0] https://bugzilla.redhat.com/show_bug.cgi?id=1307224#c1 -- Andrew :) Senior Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) PGP Key: ed25519/35964222 (hkp://keys.gnupg.net) Fingerprint = 5132 579D D154 0ED2 3E04 C5A0 CFDA 0F9B 3596 4222

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Freeze aarch64/jdk8
by Andrew Haley 08 Apr '16

08 Apr '16

The jdk8 development tree at aarch64/jdk8 has been in use for some time. I don't think we need it any more. aarch64/jdk8u tracks upstream jdk8u far more closely: it differs from upstream only in the minimum number of places needed to get AArch64 to work. I'm proposing to close aarch64/jdk8 to all updates. aarch64/jdk8u will be used for all commits. jdk8 is interesting from a historical point of view, so it will be made read only. The rules for committing to aarch64/jdk8u are: 1. All non-AArch64-specific patches come from jdk8u. If you want to change anything non-AArch64 submit it to jdk8u. 2. All AArch64-specific patches, if they are relevant to jdk9, must be submitted there first and back-ported to jdk8u. Andrew.

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RFR: 8u77
by Andrew Hughes 06 Apr '16

06 Apr '16

Hi, OpenJDK 8 was recently updated for an out-of-band security update, u77. Here is the corresponding update for aarch64/jdk8u, aarch64-jdk8u77-b03 http://cr.openjdk.java.net/~andrew/aarch64-8/u77/ The interesting changes are in the jdk tree. The rest are just tags. Ok to push? Thanks, -- Andrew :) Senior Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) PGP Key: ed25519/35964222 (hkp://keys.gnupg.net) Fingerprint = 5132 579D D154 0ED2 3E04 C5A0 CFDA 0F9B 3596 4222

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RFR: 8153172: aarch64: hotspot crashes after the 8.1 LSE patch is merged
by Edward Nevill 31 Mar '16

31 Mar '16

Hi, Sorry, there is a bug in the 8.1 LSE patch I pushed yesterday which causes a guarantee failure. The following program http://cr.openjdk.java.net/~enevill/8153172/TestUnsafe.java generates the following guarantee failure # Internal Error (/home/yangfei/openjdk9_hs-comp/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp:1157), pid=7967, tid=8040 # guarantee(Rs != Rn && Rs != Rt) failed: unpredictable instruction The following webrev fixes this http://cr.openjdk.java.net/~enevill/8153172/webrev The problem is that the usage of scratch registers in atomic_xchg is different from the usage previously so using rscratch1 for the obj causes Rs == Rn which is unpredictable. Changed it to use rscratch2 for the obj fixes this. Thanks to Felix for finding this. OK to push? Ed.

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hg: aarch64-port/jdk8u/hotspot: Add missing includes to macroAssembler_aarch64.cpp
by edward.nevill＠gmail.com 31 Mar '16

31 Mar '16

Changeset: ca40f361ea45 Author: enevill Date: 2016-03-31 08:30 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/hotspot/rev/ca40f361ea45 Add missing includes to macroAssembler_aarch64.cpp ! src/cpu/aarch64/vm/macroAssembler_aarch64.cpp

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hg: aarch64-port/jdk8u/nashorn: Added tag aarch64-jdk8u77-b03 for changeset af05959dd44b
by gnu.andrew＠redhat.com 29 Mar '16

29 Mar '16

Changeset: 6c5e2fc0638d Author: andrew Date: 2016-03-23 17:20 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/nashorn/rev/6c5e2fc0638d Added tag aarch64-jdk8u77-b03 for changeset af05959dd44b ! .hgtags

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hg: aarch64-port/jdk8u/jdk: 2 new changesets
by gnu.andrew＠redhat.com 29 Mar '16

29 Mar '16

Changeset: bb55ecc50daa Author: poonam Date: 2016-03-21 13:48 -0700 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/jdk/rev/bb55ecc50daa 8152335: Improve MethodHandle consistency Reviewed-by: vlivanov, acorn, jrose ! src/share/classes/java/lang/ClassLoader.java ! src/share/classes/java/lang/invoke/MemberName.java ! src/share/classes/java/lang/invoke/MethodHandleNatives.java ! src/share/classes/sun/invoke/util/VerifyAccess.java Changeset: ebcbf5b820e8 Author: andrew Date: 2016-03-23 17:20 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/jdk/rev/ebcbf5b820e8 Added tag aarch64-jdk8u77-b03 for changeset bb55ecc50daa ! .hgtags

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hg: aarch64-port/jdk8u/hotspot: Added tag aarch64-jdk8u77-b03 for changeset 43c11664317a
by gnu.andrew＠redhat.com 29 Mar '16

29 Mar '16

Changeset: 895a79fdb9d5 Author: andrew Date: 2016-03-23 17:20 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/hotspot/rev/895a79fdb9d5 Added tag aarch64-jdk8u77-b03 for changeset 43c11664317a ! .hgtags

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hg: aarch64-port/jdk8u/langtools: Added tag aarch64-jdk8u77-b03 for changeset 109a626b4431
by gnu.andrew＠redhat.com 29 Mar '16

29 Mar '16

Changeset: 2e3153b336d2 Author: andrew Date: 2016-03-23 17:20 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/langtools/rev/2e3153b336d2 Added tag aarch64-jdk8u77-b03 for changeset 109a626b4431 ! .hgtags

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hg: aarch64-port/jdk8u/jaxws: Added tag aarch64-jdk8u77-b03 for changeset eeb105ae870d
by gnu.andrew＠redhat.com 29 Mar '16

29 Mar '16

Changeset: a9d0d969559f Author: andrew Date: 2016-03-23 17:20 +0000 URL: http://hg.openjdk.java.net/aarch64-port/jdk8u/jaxws/rev/a9d0d969559f Added tag aarch64-jdk8u77-b03 for changeset eeb105ae870d ! .hgtags

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