From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752302AbeCPTOS (ORCPT ); Fri, 16 Mar 2018 15:14:18 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:35140 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750877AbeCPTOR (ORCPT ); Fri, 16 Mar 2018 15:14:17 -0400 From: jglisse@redhat.com To: linux-mm@kvack.org Cc: Andrew Morton , linux-kernel@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Ralph Campbell , Evgeny Baskakov , Mark Hairgrove , John Hubbard Subject: [PATCH 0/4] hmm: fixes and documentations v2 Date: Fri, 16 Mar 2018 15:14:05 -0400 Message-Id: <20180316191414.3223-1-jglisse@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jérôme Glisse Removed pointless VM_BUG_ON() cced stable when appropriate and splitted the last patch into _many_ smaller patches to make it easier to review. The end result is same modulo comments i received so far and the extra documentation i added while splitting thing up. Below is previous cover letter (everything in it is still true): ---------------------------------------------------------------------- All patches only impact HMM user, there is no implication outside HMM. First patch improve documentation to better reflect what HMM is. Second patch fix #if/#else placement in hmm.h. The third patch add a call on mm release which helps device driver who use HMM to clean up early when a process quit. Finaly last patch modify the CPU snapshot and page fault helper to simplify device driver. The nouveau patchset i posted last week already depends on all of those patches. You can find them in a hmm-for-4.17 branch: git://people.freedesktop.org/~glisse/linux https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-for-4.17 Cc: Ralph Campbell Cc: Evgeny Baskakov Cc: Mark Hairgrove Cc: John Hubbard Jérôme Glisse (12): mm/hmm: fix header file if/else/endif maze mm/hmm: hmm_pfns_bad() was accessing wrong struct mm/hmm: use struct for hmm_vma_fault(), hmm_vma_get_pfns() parameters mm/hmm: remove HMM_PFN_READ flag and ignore peculiar architecture mm/hmm: use uint64_t for HMM pfn instead of defining hmm_pfn_t to ulong mm/hmm: cleanup special vma handling (VM_SPECIAL) mm/hmm: do not differentiate between empty entry or missing directory mm/hmm: rename HMM_PFN_DEVICE_UNADDRESSABLE to HMM_PFN_DEVICE_PRIVATE mm/hmm: move hmm_pfns_clear() closer to where it is use mm/hmm: factor out pte and pmd handling to simplify hmm_vma_walk_pmd() mm/hmm: change hmm_vma_fault() to allow write fault on page basis mm/hmm: use device driver encoding for HMM pfn Ralph Campbell (2): mm/hmm: documentation editorial update to HMM documentation mm/hmm: HMM should have a callback before MM is destroyed v2 Documentation/vm/hmm.txt | 360 +++++++++++++++++----------------- MAINTAINERS | 1 + include/linux/hmm.h | 156 ++++++++------- mm/hmm.c | 495 +++++++++++++++++++++++++++++------------------ 4 files changed, 582 insertions(+), 430 deletions(-) -- 2.14.3