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Date: Tue, 15 Feb 2022 00:48:03 +0000
From: Al Viro <viro@zeniv.linux.org.uk>
To: Arnd Bergmann <arnd@kernel.org>
Subject: Re: [PATCH 11/14] sparc64: remove CONFIG_SET_FS support
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On Mon, Feb 14, 2022 at 05:34:49PM +0100, Arnd Bergmann wrote:

> -/*
> - * Sparc64 is segmented, though more like the M68K than the I386.
> - * We use the secondary ASI to address user memory, which references a
> - * completely different VM map, thus there is zero chance of the user
> - * doing something queer and tricking us into poking kernel memory.

Actually, this part of comment probably ought to stay - it is relevant
for understanding what's going on (e.g. why is access_ok() always true, etc.)