linux-kernel - Re: [RFC PATCH 0/15] x86: Remove support for TSC-less and CX8-less CPUs

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Message-ID: <aAyYyyiTY02DW8pH@duo.ucw.cz>
Date: Sat, 26 Apr 2025 10:26:51 +0200
From: Pavel Machek <pavel@....cz>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org, "Ahmed S . Darwish" <darwi@...utronix.de>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Ard Biesheuvel <ardb@...nel.org>, Arnd Bergmann <arnd@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	John Ogness <john.ogness@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC PATCH 0/15] x86: Remove support for TSC-less and CX8-less
 CPUs

Hi!

> In the x86 architecture we have various complicated hardware emulation
> facilities on x86-32 to support ancient 32-bit CPUs that very very few
> people are using with modern kernels. This compatibility glue is sometimes
> even causing problems that people spend time to resolve, which time could
> be spent on other things.

We have open-source 486 cores, such as
https://github.com/MiSTer-devel/ao486_MiSTer . I'm not aware of
open-source 586 cores... so this is a bit sad.

Best regards,
									Pavel
-- 
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