Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753887AbdIEWdo (ORCPT ); Tue, 5 Sep 2017 18:33:44 -0400 Received: from mail-it0-f43.google.com ([209.85.214.43]:36849 "EHLO mail-it0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753133AbdIEWdm (ORCPT ); Tue, 5 Sep 2017 18:33:42 -0400 X-Google-Smtp-Source: ADKCNb7tVnmFbH34fPfzLjlEDJmfJXdsXNJnFWwSaj4yOicHsQBjD6XA1KD2UQ0qeKIahRqVbOA0zry7Oj3/hPb0umo= MIME-Version: 1.0 In-Reply-To: References: <20170904093158.k6pg3ytcbotjlhv5@gmail.com> <20170905214046.ishenhbj7jrtoufc@gmail.com> From: Linus Torvalds Date: Tue, 5 Sep 2017 15:33:41 -0700 X-Google-Sender-Auth: bVDWAa9KUdaVzsbB6rJeQT8LM9s 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: 615 Lines: 18 On Tue, Sep 5, 2017 at 2:45 PM, Linus Torvalds wrote: > > 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) Now down to 18. And one of those 18 is commit 10af6235e0d3 ("x86/mm: Implement PCID based optimization: try to preserve old TLB entries using PCID"), which I guess is where the problem might actually start showing up if it is pcid. I'll continue to bisect rather than just test "nopcid", because I want to get that bisection result regardless. Linus