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 11378C433F5 for ; Thu, 17 Mar 2022 12:46:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233677AbiCQMrs (ORCPT ); Thu, 17 Mar 2022 08:47:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231530AbiCQMrr (ORCPT ); Thu, 17 Mar 2022 08:47:47 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E89CF105074 for ; Thu, 17 Mar 2022 05:46:30 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1647521189; 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=6UWSnFJfyk89o7rv8EPIFwEm6EdPuHp5eJF4BxTz6A8=; b=mjxI6T6gLnySTe1LlKvUeulr1uJ4VHy0kpoQCCrtNohrfOd6vplkmnchXxeYzaJbtodgZN gIP61eEs4VbeI3SDPMFEVhUSeysggJjrmZDzxABjL+bnlEqHUMCwdG7blMtNg+oMtU9IoQ cgV+SqrCHUBwBDcen/Z6CpDV6iSjkOaIpmlO6fsw0iPmpMY/qFBZt1ZZQsiomlVWaKtwCA HGlRrB35F/iL+0AS9VLSt6zDaasJTQNe9JoiTooLXDkMZfICc3xIA43CRyaD4fEgwL6+iH /aZNOywuZX7wUm79urqpekgHgNVotd1o+SgphkCgXEUBt9g41BiHgzpdC0wbag== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1647521189; 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=6UWSnFJfyk89o7rv8EPIFwEm6EdPuHp5eJF4BxTz6A8=; b=4BgG7RPsmYMViCMUP1fWipHpMA9zfS8Rc4HcliVU1B6LyhfbBa5IWLMv6o2KFb03/dQtni CDXY1s+CnmVyHsDA== To: "Kirill A. Shutemov" , mingo@redhat.com, bp@alien8.de, dave.hansen@intel.com, luto@kernel.org, peterz@infradead.org Cc: sathyanarayanan.kuppuswamy@linux.intel.com, aarcange@redhat.com, ak@linux.intel.com, dan.j.williams@intel.com, david@redhat.com, hpa@zytor.com, jgross@suse.com, jmattson@google.com, joro@8bytes.org, jpoimboe@redhat.com, knsathya@kernel.org, pbonzini@redhat.com, sdeep@vmware.com, seanjc@google.com, tony.luck@intel.com, vkuznets@redhat.com, wanpengli@tencent.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, x86@kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" , Dave Hansen Subject: Re: [PATCHv6 22/30] x86/boot: Set CR0.NE early and keep it set during the boot In-Reply-To: <20220316020856.24435-23-kirill.shutemov@linux.intel.com> References: <20220316020856.24435-1-kirill.shutemov@linux.intel.com> <20220316020856.24435-23-kirill.shutemov@linux.intel.com> Date: Thu, 17 Mar 2022 13:46:29 +0100 Message-ID: <87wngszqze.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 16 2022 at 05:08, Kirill A. Shutemov wrote: > Make CR0 initialization consistent, deriving the initial value of CR0 > from CR0_STATE. Since CR0_STATE always has CR0.NE=1, this ensures that > CR0.NE is never 0 and avoids the #GP. > > Signed-off-by: Kirill A. Shutemov > Reviewed-by: Dave Hansen Reviewed-by: Thomas Gleixner