From patchwork Mon Oct 25 13:21:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 1545770 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4HdG0729yrz9t1r for ; Tue, 26 Oct 2021 00:24:53 +1100 (AEDT) Received: from localhost ([::1]:60556 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mezy6-0007qw-86 for incoming@patchwork.ozlabs.org; Mon, 25 Oct 2021 09:24:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38640) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mezvI-0005ik-EN for qemu-devel@nongnu.org; Mon, 25 Oct 2021 09:21:56 -0400 Received: from mail.csgraf.de ([85.25.223.15]:48090 helo=zulu616.server4you.de) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mezvE-0001Qj-Oc for qemu-devel@nongnu.org; Mon, 25 Oct 2021 09:21:55 -0400 Received: from localhost.localdomain (dynamic-095-114-012-148.95.114.pool.telefonica.de [95.114.12.148]) by csgraf.de (Postfix) with ESMTPSA id 69262608043E; Mon, 25 Oct 2021 15:21:48 +0200 (CEST) From: Alexander Graf To: Cameron Esfahani Subject: [PATCH v2] hvf: Avoid mapping regions < PAGE_SIZE as ram Date: Mon, 25 Oct 2021 15:21:47 +0200 Message-Id: <20211025132147.28308-1-agraf@csgraf.de> X-Mailer: git-send-email 2.30.1 (Apple Git-130) MIME-Version: 1.0 Received-SPF: pass client-ip=85.25.223.15; envelope-from=agraf@csgraf.de; helo=zulu616.server4you.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Roman Bolshakov , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" HVF has generic memory listener code that adds all RAM regions as HVF RAM regions. However, HVF can only handle page aligned, page granule regions. So let's ignore regions that are not page aligned and sized. They will be trapped as MMIO instead. Signed-off-by: Alexander Graf Reviewed-by: Philippe Mathieu-Daudé --- v1 -> v2: - Use QEMU_IS_ALIGNED() --- accel/hvf/hvf-accel-ops.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index 2b2c411076..54457c76c2 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -122,6 +122,7 @@ static void hvf_set_phys_mem(MemoryRegionSection *section, bool add) MemoryRegion *area = section->mr; bool writeable = !area->readonly && !area->rom_device; hv_memory_flags_t flags; + uint64_t page_size = qemu_real_host_page_size; if (!memory_region_is_ram(area)) { if (writeable) { @@ -135,6 +136,12 @@ static void hvf_set_phys_mem(MemoryRegionSection *section, bool add) } } + if (!QEMU_IS_ALIGNED(int128_get64(section->size), page_size) || + !QEMU_IS_ALIGNED(section->offset_within_address_space, page_size)) { + /* Not page aligned, so we can not map as RAM */ + add = false; + } + mem = hvf_find_overlap_slot( section->offset_within_address_space, int128_get64(section->size));