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[209.132.180.67]) by mx.google.com with ESMTP id b14-v6si12455933pll.736.2018.02.16.11.19.51; Fri, 16 Feb 2018 11:20:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=fXp9XCfP; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758704AbeBPQ47 (ORCPT + 99 others); Fri, 16 Feb 2018 11:56:59 -0500 Received: from mail-lf0-f68.google.com ([209.85.215.68]:44798 "EHLO mail-lf0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758671AbeBPQ45 (ORCPT ); Fri, 16 Feb 2018 11:56:57 -0500 Received: by mail-lf0-f68.google.com with SMTP id v9so2894808lfa.11; Fri, 16 Feb 2018 08:56:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Z77OIW/81kM5xtxl2hJKSVojYdBAMxj6cVZfUStKDCA=; b=fXp9XCfP52Saua8sZ/1pvtDG1nQPXRkpUAvAX8AxsKc2otuQ+jEVNe50ADyxOCj+yz 12rQ1cLn/FTKW/7+vA3lQCWmON6Atb+HOFzaQq1sWoEkc95xhuJeW0NSTPQaCR8ic390 /I0fQR1LF8TNX5mOmiDqQT37yvDa43Lim1S3Gsal19Ryep8lCQz11rTd4kqB5FngkFey gJ7/0r9uCK2enjw3gu15BsosTTAf+67RhFIHXCrs97ZhRFgoB/W/W7mnVHFXRUF7S6kN q23WQXphyf+78altjF2/lBxBM3WtTX5PxfPALcGeETMLgKE2rPcSrAAqJwvMHL/Wz8Xb 9PpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Z77OIW/81kM5xtxl2hJKSVojYdBAMxj6cVZfUStKDCA=; b=B3JzRwXIQSAN+8yItCSeR0GLxpruUg21igiGhVEh33duVPf1mcv/t+Gyd/9X4+tr1A xUp7KFUCFisZsNqvgyUo6/W1SqqIxBTWfBE/22f9cu3OxHFdhhrDN/659+gCwW32z/+o OVl7LgCjT5rPy6xyNbIh1YPfWwukT1+jwk1s8DtiC7zfoWB6XIdwTyeJ7zpfKWeBteHo F/S3aruLuFjXs4LMV6BaUu2h0ZmXsu/85gTuVk/zx8e7D4uQs5ltiJN3BdPadGUWw0+f QZTmat5x95ZsZ/koIbACL4iicPypUVq6+EpyxmaRW6csZAeQl3Iylj6843y7MMFSz4y6 BLMQ== X-Gm-Message-State: APf1xPDmFqKW3+TeyM6/qA68VHgQ9v7a5NFjHLWx75wWafaipDtbyx3M sBFzsTH+KzbraNYBkPPuR2TuviXKYzDB+Q78i3Y= X-Received: by 10.46.89.28 with SMTP id n28mr210292ljb.73.1518800215602; Fri, 16 Feb 2018 08:56:55 -0800 (PST) MIME-Version: 1.0 Received: by 10.25.23.22 with HTTP; Fri, 16 Feb 2018 08:56:54 -0800 (PST) In-Reply-To: References: <20180209133931.211869118@linuxfoundation.org> <20180209133934.259299920@linuxfoundation.org> <20180213150007.GJ26982@kroah.com> <20180213163239.GA17101@kroah.com> From: Nick Lowe Date: Fri, 16 Feb 2018 16:56:54 +0000 Message-ID: Subject: Re: [PATCH 4.9 43/92] x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown To: Greg Kroah-Hartman Cc: Arjan van de Ven , linux-kernel@vger.kernel.org, stable@vger.kernel.org, David Woodhouse , Thomas Gleixner , Borislav Petkov , Dave Hansen , gnomes@lxorguk.ukuu.org.uk, ak@linux.intel.com, ashok.raj@intel.com, karahmed@amazon.de, torvalds@linux-foundation.org, peterz@infradead.org, Borislav Petkov , pbonzini@redhat.com, tim.c.chen@linux.intel.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This should use boot_cpu_has_bug(X86_BUG_CPU_MELTDOWN)) - I am preparing patches. Best, Nick