Re: AIX support

Álvaro Herrera <alvherre@kurilemu.de>

From: Alvaro Herrera <alvherre@kurilemu.de>

To: Srirama Kucherlapati <sriram.rk@in.ibm.com>

Cc: Heikki Linnakangas <hlinnaka@iki.fi>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>, Bruce Momjian <bruce@momjian.us>, Peter Eisentraut <peter@eisentraut.org>, Laurenz Albe <laurenz.albe@cybertec.at>, Noah Misch <noah@leadboat.com>, Michael Paquier <michael@paquier.xyz>, Andres Freund <andres@anarazel.de>, Thomas Munro <thomas.munro@gmail.com>, "tvk1271@gmail.com" <tvk1271@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Tristan Partin <tristan@neon.tech>, wenhui qiu <qiuwenhuifx@gmail.com>, "postgres-ibm-aix@wwpdl.vnet.ibm.com" <postgres-ibm-aix@wwpdl.vnet.ibm.com>

Date: 2025-09-20T15:20:48Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Restore AIX support.
- 4a1b05caa55d 19 (unreleased) landed
pg_createsubscriber: Improve error messages.
- 898c131b58a0 18.0 cited
Use <stdint.h> and <inttypes.h> for c.h integers.
- 962da900ac8f 18.0 cited
Stabilize jsonb_path_query test case.
- af2115226831 18.0 cited
Fix C23 compiler warning
- d2b4b4c2259e 18.0 cited
pg_stat_statements: Add tests for nested queries with level tracking
- 45e0ba30fc40 18.0 cited
Add missing newline at the end of index_including.sql
- 54b69f1bd730 17.0 cited
Remove AIX support
- 0b16bb8776bb 17.0 cited
Fix s_lock.h PPC assembly code to be compatible with native AIX assembler.
- c41a1215f049 9.6.0 cited
Use a non-locking initial test in TAS_SPIN on PPC.
- bc2a050d4097 9.2.0 cited
Use LWSYNC in place of SYNC/ISYNC in PPC spinlocks, where possible.
- 631beeac3598 9.2.0 cited
Use mutex hint bit in PPC LWARX instructions, where possible.
- 5cfa8dd3007d 9.2.0 cited
Adjust TAS assembly as per recent discussions: use "+m"(*lock) everywhere
- 109867748259 8.0.0 cited
Apple's assembler likes the inlined TAS syntax too, so no reason to
- f9ba0a7fe563 7.4.1 cited
Tighten up register usage for inline PPC version of tas().
- eb5e4c58d137 7.4.1 cited
Put the isync where it's supposed to be.
- cd35d601b859 7.4.1 cited
> > I'll re-check that with the ppc architecture guy here.
- ceb4f5ea9c2c 7.4.1 cited
Fix PPC s_lock operations to work correctly on multi-CPU machines.
- 7233aae50bea 7.3.1 cited
I tried to build PostgreSQL with the following step to see backends hung
- 50938576d482 7.3.1 cited
Complete merge of all old man page information.
- f2f43efbe1d5 7.1.1 cited
s_lock aix patch.
- e3b06a871b63 7.1.1 cited

On 2025-Sep-03, Srirama Kucherlapati wrote:

> As part of our ongoing efforts to enhance AIX platform compatibility,
> we’ve been running the code across all stable PostgreSQL release
> branches using the build farm infrastructure. All test suites,
> including TAP tests, are passing consistently, indicating no
> regressions.

The buildfarm results you sent look good.  You should definitely be
testing branch master though rather than the stable ones, because it's
not clear to me, as Bruce said, that we would really backpatch AIX
support to stable branches.  (You're of course free to produce your own
packages from patched versions, in the interim).

I noticed that you add mkldexport.sh and that the makefiles use it.  I
wonder if that really is necessary with the current AIX tooling (it
looks an outdated gadget).

Also, I notice that Meson supports AIX starting from version 0.56; did
you verify whether it works to build this with that?

-- 
Álvaro Herrera               48°01'N 7°57'E  —  https://www.EnterpriseDB.com/