Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753563AbdIEVpN (ORCPT ); Tue, 5 Sep 2017 17:45:13 -0400 Received: from mail-io0-f196.google.com ([209.85.223.196]:33646 "EHLO mail-io0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753517AbdIEVpC (ORCPT ); Tue, 5 Sep 2017 17:45:02 -0400 X-Google-Smtp-Source: AOwi7QD8WoLTVdDowNj3W0IHdxsyUjuzRPNNu2/5Rh5tR8dybQDzMs86AoOaZv/hLMmTmV8nudxOAVGILC0R8+acxRI= MIME-Version: 1.0 In-Reply-To: <20170905214046.ishenhbj7jrtoufc@gmail.com> References: <20170904093158.k6pg3ytcbotjlhv5@gmail.com> <20170905214046.ishenhbj7jrtoufc@gmail.com> From: Linus Torvalds Date: Tue, 5 Sep 2017 14:45:01 -0700 X-Google-Sender-Auth: 1MDq9eIjfiq7Hx9kCG9smg_Pndw Message-ID: Subject: Re: [GIT PULL] x86/mm changes for v4.14: PCID support, 5-level paging support, Secure Memory Encryption support To: Ingo Molnar Cc: Linux Kernel Mailing List , Thomas Gleixner , "H. Peter Anvin" , Peter Zijlstra , Andrew Morton , Andy Lutomirski , Borislav Petkov Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 500 Lines: 13 On Tue, Sep 5, 2017 at 2:40 PM, Ingo Molnar wrote: > > Does your laptop CPU have PCID support by any chance? The CPU coming > out of resume with PCID disabled and us not properly re-enabling it > might be a possible failure mode. It does have pcid. It's a -7-6560U in the prev-gen XPS 13 (aka "9350"). I have bisected a bit deeper, and the pcid code is definitely in that bisection window still. But are a fair number of other commits (about 160 right now) Linus