From: John Naylor <john.naylor@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Refactor handling of x86 CPUID instructions
Date: Wed, 25 Mar 2026 05:33:26 +0000
Message-ID: <E1w5Grt-001LRO-0N@gemulon.postgresql.org> (raw)
Refactor handling of x86 CPUID instructions
Introduce two helpers for CPUID, pg_cpuid and pg_cpuid_subleaf that wrap
the platform specific __get_cpuid/__cpuid and __get_cpuid_count/__cpuidex
functions.
Additionally, use macros to specify registers names (e.g. EAX) for clarity,
instead of numeric integers into the result array.
Author: Lukas Fittl <lukas@fittl.com>
Suggested-By: John Naylor <john.naylor@postgresql.org>
Discussion: https://postgr.es/m/CANWCAZZ+Crjt5za9YmFsURRMDW7M4T2mutDezd_3s1gTLnrzGQ@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/be6a7494d2e387d1f5b7a5dcc6c2afcb403188d6
Modified Files
--------------
src/port/pg_cpu_x86.c | 76 ++++++++++++++++++++++++++++++++++-----------------
1 file changed, 51 insertions(+), 25 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: john.naylor@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Refactor handling of x86 CPUID instructions
In-Reply-To: <E1w5Grt-001LRO-0N@gemulon.postgresql.org>
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