Hotspot segfaulting on Linux SPARC

[David Holmes]

On 13/04/2018 7:04 AM, Kim Barrett wrote:
>> On Apr 9, 2018, at 11:03 AM, Thomas Stüfe <thomas.stuefe at gmail.com> wrote:
>>
>> VM_Version::determine_features() needs a code blob, and hence
>> ResourceMark, on sparc and ppc and s390 I think.

VM_Version::determine_features calls the os-cpu specific 
VM_Version::platform_features. I don't see where a code blob is being 
used on Solaris sparc, or Linux sparc. ??

David
-----


>>
>> But I think the reason that only sparc fails is that
>> VM_Version::determine_features() is called too early on Sparc (as part of
>> os::init_before_ergo()). The other platforms call that function later in
>> initialization (VM_Version_init() -> init_globals()). Could that be the
>> error, and if yes, could  VM_Version::determine_features()  be delayed?
> 
> This sounded familiar to me, so I looked into the history of that placement.
> init_before_ergo was created specifically to call determine_features that early:
> 
> https://bugs.openjdk.java.net/browse/JDK-8133023
>