Re: [PATCH 11/14] sparc64: remove CONFIG_SET_FS support
From: Al Viro <viro@zeniv.linux.org.uk>
Date: 2022-02-15 00:48:13
Also in:
linux-alpha, linux-api, linux-arch, linux-m68k, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linux-um, lkml, sparclinux
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.)