From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id A8CD26B0003 for ; Sun, 24 Jun 2018 09:19:44 -0400 (EDT) Received: by mail-wr0-f199.google.com with SMTP id i14-v6so7714624wrq.1 for ; Sun, 24 Jun 2018 06:19:44 -0700 (PDT) Received: from Galois.linutronix.de (Galois.linutronix.de. [2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id 17-v6si4117533wrv.412.2018.06.24.06.19.42 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Sun, 24 Jun 2018 06:19:43 -0700 (PDT) Date: Sun, 24 Jun 2018 15:19:18 +0200 (CEST) From: Thomas Gleixner Subject: Re: [PATCH v3 0/3] fix free pmd/pte page handlings on x86 In-Reply-To: <20180516233207.1580-1-toshi.kani@hpe.com> Message-ID: References: <20180516233207.1580-1-toshi.kani@hpe.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Toshi Kani Cc: mhocko@suse.com, akpm@linux-foundation.org, mingo@redhat.com, hpa@zytor.com, cpandya@codeaurora.org, linux-mm@kvack.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org On Wed, 16 May 2018, Toshi Kani wrote: > This series fixes two issues in the x86 ioremap free page handlings > for pud/pmd mappings. > > Patch 01 fixes BUG_ON on x86-PAE reported by Joerg. It disables > the free page handling on x86-PAE. > > Patch 02-03 fixes a possible issue with speculation which can cause > stale page-directory cache. > - Patch 02 is from Chintan's v9 01/04 patch [1], which adds a new arg > 'addr', with my merge change to patch 01. > - Patch 03 adds a TLB purge (INVLPG) to purge page-structure caches > that may be cached by speculation. See the patch descriptions for > more detal. Toshi, Joerg, Michal! I'm failing to find a conclusion of this discussion. Can we finally make some progress with that? Can someone give me a hint what to pick up urgently please? Thanks, tglx