Re: AIX support

Noah Misch <noah@leadboat.com>

From: Noah Misch <noah@leadboat.com>

To: Sriram RK <sriram.rk@outlook.com>

Cc: Tom Lane <tgl@sss.pgh.pa.us>, Thomas Munro <thomas.munro@gmail.com>, Alvaro Herrera <alvherre@alvh.no-ip.org>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>

Date: 2024-04-05T17:26:49Z

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 Fri, Apr 05, 2024 at 04:12:06PM +0000, Sriram RK wrote:
> 
> > What you do need to do to reproduce the described problems is
> > check out the Postgres git tree and rewind to just before
> > commit 0b16bb877, where we deleted AIX support.  Any attempt
> > to restore AIX support would have to start with reverting that
> > commit (and perhaps the followup f0827b443).

> Going ahead, we want to build the changes that were removed as part of “0b16bb8776bb8”, with latest Xlc and gcc version.
> 
> We were building the source from the postgres ftp server(https://ftp.postgresql.org/pub/source/), would like to understand if there are any source level changes between the ftp server and the source on github?

To succeed in this endeavor, you'll need to develop fluency in the tools to
answer questions like that, or bring in someone who is fluent.  In this case,
GNU diff is the standard tool for answering your question.  These resources
cover other topics you would need to learn:

https://wiki.postgresql.org/wiki/Developer_FAQ
https://wiki.postgresql.org/wiki/So,_you_want_to_be_a_developer%3F