RFR(M): 8166560: [s390] Basic enablement of s390 port.
david.holmes at oracle.com
Tue Oct 4 07:56:15 UTC 2016
On 28/09/2016 8:26 PM, Lindenmaier, Goetz wrote:
> here a new webrev for this change:
> I reverted the major reorderings in macros.hpp and os_linux.cpp.
> David asked me to do so, and I guess it makes reviewing more simple.
Thanks. That said ...
> Also this fixes the issue spotted by David which actually was wrong.
> The other renaming of ARM to ARM32 was correct, though, as
> AARCH64 is defined in both ARM 64-bit ports, and is checked before.
> So the existing case checking ARM is only reached if !LP64.
> I documented this ...
... We actually have a bug with the Elf32_* defines in os_linux.cpp
1769 #elif (defined ARM) // ARM must come before AARCH64 because the
closed 64-bit port requires so.
1770 static Elf32_Half running_arch_code=EM_ARM;
Aarch64 should come first otherwise we will set the wrong value. I've
been told it would only affect an error message but still ... can I ask
you to fix this please. Thanks.
I'd prefer to just see something like:
S390_ONLY(if (_heaps == NULL) return;) // May be true when NMT detail is
Otherwise seems okay.
> Also I removed the change in mutex.hpp. Maybe we contribute
> the full change this was part of, but independent of the s390 port.
> I withdraw the part of the change to jdk introducing jvm.cfg. Volker wants to
> do a separate change for this.
> Best regards,
>> -----Original Message-----
>> From: Volker Simonis [mailto:volker.simonis at gmail.com]
>> Sent: Dienstag, 27. September 2016 19:58
>> To: David Holmes <david.holmes at oracle.com>
>> Cc: Lindenmaier, Goetz <goetz.lindenmaier at sap.com>; hotspot-
>> dev at openjdk.java.net; core-libs-dev <core-libs-dev at openjdk.java.net>
>> Subject: Re: RFR(M): 8166560: [s390] Basic enablement of s390 port.
>> On Fri, Sep 23, 2016 at 8:11 AM, David Holmes <david.holmes at oracle.com>
>>> Hi Goetz,
>>> I see a change not related directly to S390 ie change from ARM to ARM32 in
>> The change looks a little confusing because Goetz reordered the ifdef
>> cascades alphabetically (which I think is good).
>> Besides that, the only real change not related to s390 is indeed the
>> change from ARM to ARM32 which happend two times in the file.
>> @Goetz: have you done this intentionally?
>>> It will be a while before I can go through this in any detail.
>>> On 23/09/2016 3:52 PM, Lindenmaier, Goetz wrote:
>>>> This change is part of the s390 port. It contains some basic adaptions
>>>> needed for a full hotspot port for linux s390x.
>>>> It defines the required macros, platform names and includes.
>>>> The s390 port calles CodeCache::contains() in current_frame(), which is
>>>> used in NMT. As NMT already collects stack traces before the CodeCache
>>>> initialized, contains() needs a check for this.
>>>> Wherever a row of platforms are listed, I sorted them alphabetically.
>>>> The jdk requires the file jvm.cfg.
>>>> Please review. I please need a sponsor.
>>>> Best regards,
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