From patchwork Thu Sep 21 08:50:52 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 816762 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xyVqW4GrDz9t3w for ; Thu, 21 Sep 2017 18:57:24 +1000 (AEST) Received: from localhost ([::1]:52443 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1duxIQ-0001A8-7J for incoming@patchwork.ozlabs.org; Thu, 21 Sep 2017 04:57:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48363) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1duxCe-0004zD-TF for qemu-devel@nongnu.org; Thu, 21 Sep 2017 04:51:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1duxCb-0001BM-S6 for qemu-devel@nongnu.org; Thu, 21 Sep 2017 04:51:24 -0400 Received: from ozlabs.ru ([107.173.13.209]:54092) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1duxCb-0001At-M9 for qemu-devel@nongnu.org; Thu, 21 Sep 2017 04:51:21 -0400 Received: from vpl1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 6CCC83A60017; Thu, 21 Sep 2017 04:52:36 -0400 (EDT) From: Alexey Kardashevskiy To: qemu-devel@nongnu.org Date: Thu, 21 Sep 2017 18:50:52 +1000 Message-Id: <20170921085110.25598-1-aik@ozlabs.ru> X-Mailer: git-send-email 2.11.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 107.173.13.209 Subject: [Qemu-devel] [PATCH qemu v5 00/18] memory: Store physical root MR in FlatView X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Kardashevskiy , Paolo Bonzini Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This was inspired by https://bugzilla.redhat.com/show_bug.cgi?id=1481593 Previous versions: v1: https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg01559.html v2: https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg04069.html v3: https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg04523.html v4: https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg05669.html This patchset tries to reduce amount of memory used by FlatViews and tries share as many FVs between address spaces as possible. Changelog: v5: * removed "memory: Give memory_region_transaction_commit a hint" (broken) * added "memory: Avoid temporary FlatView allocation in a single child case" but I suggest ditching it, it is just there to demonsrate how I checked the suggested idea * updated example of "info mtree -f -d" in 14/18 to demonstrate the result v4: * total rework again to provide grounds for new 15/18, 17/18, 18/18 v3: * addressed comments from v2, mainly simplified the code v2: * total rework This is based on sha1 c51700273a Peter Maydell "Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20170919-v2' into staging". Please comment. Thanks. Alexey Kardashevskiy (18): exec: Explicitly export target AS from address_space_translate_internal memory: Open code FlatView rendering memory: Move FlatView allocation to a helper memory: Move AddressSpaceDispatch from AddressSpace to FlatView memory: Remove AddressSpace pointer from AddressSpaceDispatch memory: Switch memory from using AddressSpace to FlatView memory: Cleanup after switching to FlatView memory: Rename mem_begin/mem_commit/mem_add helpers memory: Store physical root MR in FlatView memory: Alloc dispatch tree where topology is generared memory: Move address_space_update_ioeventfds memory: Share FlatView's and dispatch trees between address spaces memory: Do not allocate FlatView in address_space_init memory: Rework "info mtree" to print flat views and dispatch trees memory: Share special empty FlatView memory: Get rid of address_space_init_shareable memory: Create FlatView directly memory: Avoid temporary FlatView allocation in a single child case include/exec/memory-internal.h | 16 +- include/exec/memory.h | 76 +++++----- include/hw/arm/armv7m.h | 2 +- cpus.c | 5 +- exec.c | 330 ++++++++++++++++++++++++---------------- hw/arm/armv7m.c | 9 +- hw/intc/openpic_kvm.c | 2 +- memory.c | 335 +++++++++++++++++++++++++++++++---------- monitor.c | 3 +- target/arm/cpu.c | 16 +- target/i386/cpu.c | 5 +- hmp-commands-info.hx | 7 +- 12 files changed, 533 insertions(+), 273 deletions(-)