From: "Theo de Raadt" <deraadt@openbsd.org>
Subject: Re: sparc64 vs uvm_purge()
To: tech@openbsd.org
Date: Mon, 01 Dec 2025 09:10:46 -0700

Theo de Raadt <deraadt@openbsd.org> wrote:

> I think it is a mistake to add architecture-specific #ifdef to MI
> code rather than chasing and fixing the MD issue.
> 
> I also have an issue with the idea that this is one architecture
> without a problem.  I strongly suspect uvm's behaviour has changed
  ^^^ with
> in a dangerous way which is _already_ _also_ affecting other architectures,
> and hiding that is bad.

  meaning at least, landisk and armv7, but riscv64 seems to be less reliable
  again after mid-June

> I suspect the root cause is memory shortage in some layer, triggering
> buggy retry sequences.
>