From patchwork Wed Apr 24 16:59:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 10915263 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 29CB8922 for ; Wed, 24 Apr 2019 17:01:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16BF728B44 for ; Wed, 24 Apr 2019 17:01:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0AC1A28B4B; Wed, 24 Apr 2019 17:01:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 02C5C28B44 for ; Wed, 24 Apr 2019 17:01:47 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hJLFf-0007mk-Rd; Wed, 24 Apr 2019 17:00:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hJLFe-0007hF-Jq for xen-devel@lists.xenproject.org; Wed, 24 Apr 2019 17:00:06 +0000 X-Inumbo-ID: 67f92802-66b2-11e9-92d7-bc764e045a96 Received: from foss.arm.com (unknown [217.140.101.70]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTP id 67f92802-66b2-11e9-92d7-bc764e045a96; Wed, 24 Apr 2019 17:00:04 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7332D374; Wed, 24 Apr 2019 10:00:04 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 579883F557; Wed, 24 Apr 2019 10:00:03 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xenproject.org Date: Wed, 24 Apr 2019 17:59:43 +0100 Message-Id: <20190424165955.23718-1-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 Subject: [Xen-devel] [PATCH 00/12] xen/arm: Provide a generic function to update Xen PT X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Oleksandr_Tyshchenko@epam.com, Julien Grall , sstabellini@kernel.org, Andrii_Anisov@epam.com MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Hi all, This is the third part of the boot/memory rework for Xen on Arm. At the moment, the update to Xen PT is scattered all around mm.c. This makes difficult to rework Xen memory layout or even ensuring we are following the Arm Arm properly (and we are not so far!). This part contains code to provide a generic function to update Xen PT. While I could have started from scratch, I decided to base the new function on create_xen_entries() (now renamed xen_pt_update()). This makes slightly easier to follow the changes. In this series, the new generic function will only support 3rd-level update and cannot be used in early boot (i.e because xenheap is initialized). This will be extended in follow-up patch to allow more use within mm.c. There are probably some optimization possible around the TLBs flush. I haven't looked at it so far. The last two patches of this series is to show how existing callers can be converted. There are more conversion to come in follow-up series. Cheers, Julien Grall (12): xen/arm: lpae: Add a macro to generate offsets from an address xen/arm: mm: Rename create_xen_entries() to xen_pt_update() xen/arm: mm: Move out of xen_pt_update() the logic to update an entry xen/arm: mm: Introduce _PAGE_PRESENT and _PAGE_POPULATE xen/arm: mm: Only increment mfn when valid in xen_pt_update xen/arm: mm: Sanity check any update of Xen page tables xen/arm: mm: Rework xen_pt_update_entry to avoid use xenmap_operation xen/arm: mm: Remove enum xenmap_operation xen/arm: mm: Use {, un}map_domain_page() to map/unmap Xen page-tables xen/arm: mm: Rework Xen page-tables walk during update xen/arm: mm: Don't open-code Xen PT update in {set, clear}_fixmap() xen/arm: mm: Remove set_pte_flags_on_range() xen/arch/arm/mm.c | 421 ++++++++++++++++++++++++++++++--------------- xen/arch/arm/p2m.c | 23 +-- xen/include/asm-arm/lpae.h | 9 + xen/include/asm-arm/page.h | 9 +- 4 files changed, 305 insertions(+), 157 deletions(-)