Re: [PATCH RFC] arm64: improve display about CPU architecture in cpuinfo

[Marc Zyngier]

On Mon, 07 Mar 2022 03:04:17 +0000,
Rongwei Wang <rongwei.wang@xxxxxxxxxxxxxxxxx> wrote:
> 
> Now, it is unsuitable for both ARMv8 and ARMv9 to show a
> fixed string "CPU architecture: 8" in /proc/cpuinfo.

Please read the various threads that have been going on over the past
10+ years about *why* we don't allow this sort of change (TL;DR: it
breaks userspace, and we don't do that).

Also, there is no material difference between v8 and v9 that would be
observable from userspace outside of the "Features:" line. And if that
doesn't convince you, just think of '8' as the number of bytes used by
a virtual address. You can't make that a '9'. Yet.

	M.

-- 
Without deviation from the norm, progress is not possible.