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 AC814C433EF for ; Wed, 25 May 2022 01:03:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241172AbiEYBDK (ORCPT ); Tue, 24 May 2022 21:03:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235543AbiEYBDI (ORCPT ); Tue, 24 May 2022 21:03:08 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D206D66230 for ; Tue, 24 May 2022 18:03:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1653440586; x=1684976586; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=CcOHb3vpXN7sCmMzC85HB1Ml46FJnpQ5DCMPfsAqDJ4=; b=grELVhR+oY0sLPNKgXAJohMjgTNefPzJS+uGbXAtoUiQqvpZQQMovQyo Gap33RLRrncHn4CkCmFG62/jWBjdaKE6e43ymYTvaKw8woFgiWwdCmkn2 RrxRSu+/4t7LmgnvqFxj0malSR89HYhC1BjEL3EHTcFe/VSnioSnUGOGu Gy7WiTKAbY6RWZW+LZ5j2cVHfY9OGWYi/Muq49rYk5jraUbBE1LTCcJDA tC1fMKeYuXYUs5vtcX9rwBCRpIPnb0Gc3L2ppUW+npiZ5M8I2bgahUNHs koZCRsOwpBe3yAH7z4k5M9BVB9mE3wG5PNZ6+YIyZal/Yh5vY0wSWeUgz g==; X-IronPort-AV: E=McAfee;i="6400,9594,10357"; a="261295578" X-IronPort-AV: E=Sophos;i="5.91,250,1647327600"; d="scan'208";a="261295578" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2022 18:03:06 -0700 X-IronPort-AV: E=Sophos;i="5.91,250,1647327600"; d="scan'208";a="703695444" Received: from agluck-desk3.sc.intel.com ([172.25.222.78]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2022 18:03:06 -0700 Date: Tue, 24 May 2022 18:03:04 -0700 From: "Luck, Tony" To: Borislav Petkov Cc: X86 ML , LKML Subject: Re: [RFC PATCH 3/3] x86/microcode: Taint and warn on late loading Message-ID: References: <20220524185324.28395-1-bp@alien8.de> <20220524185324.28395-4-bp@alien8.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220524185324.28395-4-bp@alien8.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 24, 2022 at 08:53:24PM +0200, Borislav Petkov wrote: > + add_taint(TAINT_CPU_OUT_OF_SPEC, LOCKDEP_STILL_OK); Seems harsh. Updating microcode to the latest is arguably the way to make sure that your CPU stays "IN_SPEC" (since the microcode may have a fix for a functional issue). -Tony