From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from jabberwock.ucw.cz (jabberwock.ucw.cz [46.255.230.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2AAAA15574E for ; Sat, 26 Apr 2025 08:26:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.255.230.98 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745656016; cv=none; b=r+SRYE9tI3LO9I7eUZbIvK491u22kc2a0JhYldgSXpmWD5f/vLWFom8mXGaooiveLOuV1jUq03+f3e5UIFjB7DT/cfUwgCehJ+1q386Xbq36l1Qt0XFQHIegL/A0qRlE8iTOpBRsO+vXlZOW6a+zemPTdAz64Zk8Y6ccU+nTgNo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745656016; c=relaxed/simple; bh=RVnCcmr9Mg20S5n5EjDVOuVDBVithBL364argSJiVzw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rBWMwoGajf+Quq/M8LDZJIx8DjeK2aL8yOiEi4Icyt5o0Gaj8agm4miGFqyviiQ3KeLz5vERFp0Ru2ki2nHbAibs8atJLauvvV2d4fZxLPOPHC5snvRlNlfNoykqFftUxrgsxLchKMOByci5td4N1aCyuzQTQV7kLFe/RE2GPuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ucw.cz; spf=pass smtp.mailfrom=ucw.cz; dkim=pass (1024-bit key) header.d=ucw.cz header.i=@ucw.cz header.b=fcvnb6O/; arc=none smtp.client-ip=46.255.230.98 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ucw.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ucw.cz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ucw.cz header.i=@ucw.cz header.b="fcvnb6O/" Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 2614F1C00B2; Sat, 26 Apr 2025 10:26:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ucw.cz; s=gen1; t=1745656012; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=rW9DlELSO6TPvA/H/EzsqAQbCqHifzUnKm3Zx+TxQL8=; b=fcvnb6O/FwQJ5ZAKjMW/i24Yrx6lp6s17vnC6XIUWvxOYGa7Xk8awab6Yw/b6Qs4eRIaIS kScwM9SJsQfFWsAoPRvXS05xk1Bf1LFbWBKcW+YtUWlj5JOpkVHbGqCwDdd8uyWBzjXA9j imS3jRwtMx4JYlMy0nr43Se5jjjgzPc= Date: Sat, 26 Apr 2025 10:26:51 +0200 From: Pavel Machek To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, "Ahmed S . Darwish" , Andrew Cooper , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , John Ogness , Linus Torvalds , Peter Zijlstra , Thomas Gleixner Subject: Re: [RFC PATCH 0/15] x86: Remove support for TSC-less and CX8-less CPUs Message-ID: References: <20250425084216.3913608-1-mingo@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="DAA9AA4+Jf1+l8Nf" Content-Disposition: inline In-Reply-To: <20250425084216.3913608-1-mingo@kernel.org> --DAA9AA4+Jf1+l8Nf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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 --=20 I don't work for Nazis and criminals, and neither should you. Boycott Putin, Trump, and Musk! --DAA9AA4+Jf1+l8Nf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCaAyYywAKCRAw5/Bqldv6 8nQjAJ9edIbnnFWtpFI49h5SD5q0vMeWHgCdFT3vVO7KreRtuhJHJj+66/6AFtw= =dT61 -----END PGP SIGNATURE----- --DAA9AA4+Jf1+l8Nf--