[aarch64-port-dev ] FW: [Mach5] mach5-one-phh-JDK-8151779-20200427-2151-10554367: FAILED

[Andrew Haley]

On 4/28/20 11:11 AM, Nick Gasson wrote:
>>
>> My nightly buildbot started failing recently on aarch64.
>> One issue is the error message of [cds] prevents configure from bootjdk determining.
>> https://hg.openjdk.java.net/jdk/jdk/file/1b8f9e72b22b/make/autoconf/boot-jdk.m4#l77
>>
>> ./bin/java --version
>> [0.006s][error][cds] Unable to map CDS archive -- os::vm_allocation_granularity() expected: 65536 actual: 4096
>> openjdk 14.0.1 2020-04-14
>> OpenJDK Runtime Environment AdoptOpenJDK (build 14.0.1+7)
>> OpenJDK 64-Bit Server VM AdoptOpenJDK (build 14.0.1+7, mixed mode)
>>
>> Are you aware of this issue? I can’t see [cds] line on my linux/x86_64 host.
>> Maybe it’s aarch64-only.  CC aarch-port-dev.
> 
> Was your boot JDK built on a machine configured with a different page
> size to your current machine? Looks like the CDS archive was dumped on a
> machine with 64k pages but you're running with 4k pages. There's a JBS
> issue for this:
> 
> https://bugs.openjdk.java.net/browse/JDK-8236847

The thread seems to have died here:

http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2020-February/038207.html

We really need to get this fixed. If anyone reading this has machines with
both 4k and 64k pages, please do the experiment and we'll make a suitable
patch. Everything here has 64k pages.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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