From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C44AEB64DA for ; Thu, 20 Jul 2023 13:47:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231177AbjGTNrY (ORCPT ); Thu, 20 Jul 2023 09:47:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229796AbjGTNrV (ORCPT ); Thu, 20 Jul 2023 09:47:21 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF7541986 for ; Thu, 20 Jul 2023 06:47:20 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1689860839; 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=AXu+4A6x1MU4/HvlWN0Fog/HegGVLdmneX1fhl65FaA=; b=AFasVauAu1cCBEo0jcaEzmfsIej5h319IxftWVvuRS5NAI9Tifwjy9m9laET8EUXPZbrkm T2lMjJoRaytmFvw48u7vrIWapndF9lb2SJIXGXo45VlV7XITaveIGnqqEeiI9yIpV/gblF P09Srx1DibFVgEOwo+yPSHB8lRkAl7XjtcET5IDkwaHsGvoUBxl8XfJ4GCGs6p/kuBrCQw PnMq4fd6jF67DopkGGTpVMOzqsdmGbaWv0n3P4Zt0xnBMmnYVN06MOsQ82nzrhKR5E7/M6 mIceIEeH2OEmSKAxLKBA7ToRYKqiN1lQlLMwlHeRfbxP8NVE8BA/En92hDORZQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1689860839; 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=AXu+4A6x1MU4/HvlWN0Fog/HegGVLdmneX1fhl65FaA=; b=QkPWBNz2SGQDC4iqPIQcnY8SNHgMuhigEfL3sbB7eyD3n4Fcv8ZG396HiX95yfQ/GU4B4W 8jQDxBDNrPQd15BA== To: Peter Zijlstra , Marc Gonzalez Cc: x86@kernel.org, LKML Subject: Re: [patch 00/58] x86/apic: Decrapification and static calls In-Reply-To: <20230720131316.GD3569127@hirez.programming.kicks-ass.net> References: <20230717223049.327865981@linutronix.de> <502aa1d5-97a0-7787-1d9c-486f351fe9c5@free.fr> <20230720131316.GD3569127@hirez.programming.kicks-ass.net> Date: Thu, 20 Jul 2023 15:47:19 +0200 Message-ID: <87y1ja3daw.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 20 2023 at 15:13, Peter Zijlstra wrote: > On Thu, Jul 20, 2023 at 02:43:55PM +0200, Marc Gonzalez wrote: >> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl vmx tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm tpr_shadow vnmi flexpriority vpid dtherm >> vmx flags : vnmi flexpriority tsc_offset vtpr vapic >> bugs : >> bogomips : 2400.76 >> clflush size : 64 >> cache_alignment : 64 >> address sizes : 32 bits physical, 48 bits virtual >> power management: > > But that's a 64bit chip, no? lm, cx16 The fun is that this is one of those chips which are per technical specification not supporting long mode. They advertise long mode in CPUID and it actually works. There are quite a few ATOM models out there which have the same "feature". Thansk, tglx