From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zytor.com (terminus.zytor.com [198.137.202.136]) (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 300AB37268A for ; Mon, 23 Mar 2026 21:41:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.136 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774302101; cv=none; b=mnt9wuHzkKWadupVLV1669hvtU6QLr/tS8l5gSaMgD2y9lNaDvjR1UMtXVGcgSO3L3o3HHU9LK4sxaVbdCIriZ5lRW6QkP8ObNONtIcMQXTcECaUzU5zm/aJvKlgrFBR9XkrQpey4GawDJ95atXwG32vV8kOQgG8WksbcMG2p94= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774302101; c=relaxed/simple; bh=5uDHUTZ+GJJjkqXVVIph2Av2QH03N7d+g0NqCQMmRck=; h=Date:From:To:CC:Subject:In-Reply-To:References:Message-ID: MIME-Version:Content-Type; b=SrFJkkHEuf6Sv7pgOnFqRdOAf5a9B/PsramK0F0nkrc603kcyGVLj78ZZ2trJlDsSkY5fRXThcOzV29nA43sg7tutleH89p+WQizX4R3T3uDpWRVhREoUNBA6CoeZ4vmmQ52xof5r8nWx4QdJCs3OHIokqMs0JpjA4IhjSx7fnw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com; spf=pass smtp.mailfrom=zytor.com; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b=dvOyEDGs; arc=none smtp.client-ip=198.137.202.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zytor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="dvOyEDGs" Received: from ehlo.thunderbird.net ([172.59.162.49]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 62NLeseM3254352 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Mon, 23 Mar 2026 14:40:55 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 62NLeseM3254352 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2026022301; t=1774302056; bh=5uDHUTZ+GJJjkqXVVIph2Av2QH03N7d+g0NqCQMmRck=; h=Date:From:To:CC:Subject:In-Reply-To:References:From; b=dvOyEDGsn4CbBD50NdlXUzGMW9c8oQhExoKyWRva5d/TS/yhw3eOvudDEzd3wcss8 z86cVyErWJIKjkd0H7Qinnq+4SRdPngUxqxIpGrCUi8yQwTZuWs8eZJaWygbARRDAJ Bff3JfLFP2vIECioIirn+Z4dYgkb+3qWfPXqbNommolI7EwOi0H5mPOr4m15omihsY I+IgsDP3U0LCHwL6Dn+PWd+xo6vjj6vsBxtQfe+uJZMGmCHJTRLFt9WQM6vEDwtaFo g3GvOk1XbhoZQn/PhR1JN0cBoTQGUP9sFYlUeJzK6KOe63uU+/d2fhgy/W8FEW16uq EBX4JeV4SaiSw== Date: Mon, 23 Mar 2026 14:40:47 -0700 From: "H. Peter Anvin" To: Borislav Petkov CC: Maciej Wieczor-Retman , tglx@kernel.org, peterz@infradead.org, xin@zytor.com, maciej.wieczor-retman@intel.com, babu.moger@amd.com, chang.seok.bae@intel.com, sohil.mehta@intel.com, dave.hansen@linux.intel.com, jpoimboe@kernel.org, elena.reshetova@intel.com, pawan.kumar.gupta@linux.intel.com, ak@linux.intel.com, darwi@linutronix.de, mingo@redhat.com, x86@kernel.org, linux-kernel@vger.kernel.org Subject: =?US-ASCII?Q?Re=3A_=5BPATCH_v11_3/4=5D_x86/cpu=3A_Do_a_s?= =?US-ASCII?Q?anity_check_on_required_feature_bits?= User-Agent: K-9 Mail for Android In-Reply-To: <20260323205841.GFacGpgZDBOCCG9Y5u@fat_crate.local> References: <7312c9f2feab8aea4612ed9a1841e8c22f5f69b1.1774008873.git.m.wieczorretman@pm.me> <20260323163145.GGacFq8WW0t2uqZm91@fat_crate.local> <207ba0a6-5ebc-465a-8d54-6e5a99622a72@zytor.com> <20260323191905.GDacGSKaG4rEU8O4NA@fat_crate.local> <20260323205841.GFacGpgZDBOCCG9Y5u@fat_crate.local> Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I did: the PAE case, which was not hypothetical=2E I'm sure I can dig up mo= re=2E