QEMU ARM models and Postgres replication fixes

QEMU's ARM model drew the heaviest patch traffic, covering interrupt virtualization, confidential guests, and resource partitioning. PostgreSQL discussion centered on logical replication conflict logging and crash and statistics bugs that affect production monitoring.

QEMU series adds GICv5 virtualization

An 86-patch series on qemu-devel proposes virtualization support for GICv5 in QEMU's ARM interrupt controller, including IRS and CPU interface changes. The work is still a proposal under technical review, not a merged feature. If it lands, ARM guests under QEMU would track hardware interrupt virtualization more closely.

PostgreSQL weighs a conflict log for logical replication

A proposal on pgsql-hackers would add a conflict log history table for logical replication. Review across a long thread covers error handling, GUCs, and edge cases. Operators debugging replication conflicts would get a durable record rather than only transient log output, if the design is accepted.

Patch stops WAL statistics double-counting since PostgreSQL 14

A patch aims to stop parallel workers from double-counting WAL in pg_stat_wal and EXPLAIN. The miscount has been present since PostgreSQL 14. Anyone sizing WAL or reading write amplification from those views has been seeing inflated numbers.

Interrupted concurrent partition detach can crash PostgreSQL

Reports and patches address crashes when DETACH PARTITION CONCURRENTLY is interrupted before it finishes. Discussion also covers a PostgreSQL 19 regression in publication handling. Sites that detach partitions under replication remain exposed until the fixes land.

QEMU series emulates Arm MPAM 1.1

A 37-patch series adds Arm MPAM 1.1 register and MSC emulation to the QEMU virt machine so Linux resctrl can be exercised there. The series is a proposal, not merged code. It matters for anyone testing memory-system resource partitioning without MPAM silicon.

Sixth QEMU revision starts Arm Realm VM support

A v6 series of 23 patches adds initial Realm VM support to QEMU's VMM for Arm RME confidential guests. The thread is still a proposal. It is the current path for running Realm guests under QEMU rather than only on RME hardware.

Sashiko patch-review bot now covers QEMU

An announcement says the Sashiko LLM patch-review bot now supports QEMU. Follow-up covers local use, maintainer workflows, and documentation concerns. Maintainers gain another automated reviewer, with open questions about how it fits existing review.

QEMU proposes cpr-luo to keep guest RAM across host kexec

A 21-patch series introduces a cpr-luo mode that uses LUO and KHO so a kexec host kernel update can preserve guest RAM. The work targets live host updates without tearing down guests. Operators who already use CPR would get a mode tied to those kernel facilities.