From nobody Mon Feb 9 14:50:35 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1690821171; cv=none; d=zohomail.com; s=zohoarc; b=gWS+hmJrmX8M87OJV38pxJONw34ZMXhjZN0z83+suouL7Cb7i6Eo8tTlrx8IpaZcYYeW15wxSeVKl/jM/LHyVSE5YN3Gz8NCrU4H1yQHflJx5/Pd4qlVAD2IcedJ01OjZZuZgeVCFoaAgjV4JgqjX03AnN9nqfdnqJnpeOkJ3Rg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1690821171; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=KxHtzOWMwl3F9cdQqgNc7klE0NkzOC/TeAo/4crxmro=; b=LRXakDjt1uGgI21/DUmZCGl39vaVnRXN5mQOun7BVOlMbfUCjl9zIymIJiw0w9VzS2zgeWXrNArsCqYCPJmVAjMeEQ+BK0msjSqUIo9tnID5jkRz3Msxr8kEp1MUhbKiWszhMozsLeOM+Wk+NqBku2Ly3Tp9XoTNLOTrY9M0Kbk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1690821171021329.98904683186436; Mon, 31 Jul 2023 09:32:51 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qQVoz-0001nG-Re; Mon, 31 Jul 2023 12:32:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qQVox-0001mE-Us for qemu-devel@nongnu.org; Mon, 31 Jul 2023 12:32:35 -0400 Received: from [134.134.136.126] (helo=mgamail.intel.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qQVow-00010F-AB for qemu-devel@nongnu.org; Mon, 31 Jul 2023 12:32:35 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2023 09:25:10 -0700 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.46]) by orsmga008.jf.intel.com with ESMTP; 31 Jul 2023 09:25:05 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690821154; x=1722357154; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aL1UPlr2chE5l10fcGzhJ5ApDBOAfrYAdLTB07kHh9c=; b=bdXRp/IzbDMJ2qRGcA7gxB9FbfO6oh9Mh4zfLfXuUZMZaDELkv4HjSA2 IHN1AcLZu6d7wU70g5NxQzGt/tJ8dwL+4yNb6JxaqxaFY6wiM1T1VyGuO CDFgAN1AsMRdnnoUwW4RNMCKi0BZH/B8dRg90w9M2zuNXMmI80UXHloPu L3Wh2rW1ojkMg++oz8G+Brqe9ZDba94K41CoX5y31NU+7dQ8ysgUd9OiD IypRLboS0tsFn2Wwiyoa+NROO5ieuKcHQ1pui5BA0ExjGvHBqYTrPRzkv OPWo5sFrBvnLRwoN1y3zk7eUVTUk+mH6iAgsFsdH0WMCiUtAWe23hhR+L A==; X-IronPort-AV: E=McAfee;i="6600,9927,10788"; a="353993416" X-IronPort-AV: E=Sophos;i="6.01,244,1684825200"; d="scan'208";a="353993416" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10788"; a="757984060" X-IronPort-AV: E=Sophos;i="6.01,244,1684825200"; d="scan'208";a="757984060" From: Xiaoyao Li To: Paolo Bonzini , Sean Christopherson , David Hildenbrand , Igor Mammedov , "Michael S. Tsirkin" , Marcel Apfelbaum , Richard Henderson , Marcelo Tosatti Cc: Markus Armbruster , Eric Blake , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Xu , Chao Peng , Michael Roth , isaku.yamahata@gmail.com, xiaoyao.li@intel.com, qemu-devel@nongnu.org, kvm@vger.kernel.org Subject: [RFC PATCH 04/19] memory: Introduce memory_region_can_be_private() Date: Mon, 31 Jul 2023 12:21:46 -0400 Message-Id: <20230731162201.271114-5-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230731162201.271114-1-xiaoyao.li@intel.com> References: <20230731162201.271114-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 134.134.136.126 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=134.134.136.126; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1690821172584100003 Content-Type: text/plain; charset="utf-8" Signed-off-by: Xiaoyao Li --- include/exec/memory.h | 9 +++++++++ softmmu/memory.c | 5 +++++ 2 files changed, 14 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 61e31c7b9874..e119d3ce1a1d 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1679,6 +1679,15 @@ static inline bool memory_region_is_romd(MemoryRegio= n *mr) */ bool memory_region_is_protected(MemoryRegion *mr); =20 +/** + * memory_region_can_be_private: check whether a memory region can be priv= ate + * + * Returns %true if a memory region's ram_block has valid gmem fd assigned. + * + * @mr: the memory region being queried + */ +bool memory_region_can_be_private(MemoryRegion *mr); + /** * memory_region_get_iommu: check whether a memory region is an iommu * diff --git a/softmmu/memory.c b/softmmu/memory.c index 4f8f8c0a02e6..336c76ede660 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1855,6 +1855,11 @@ bool memory_region_is_protected(MemoryRegion *mr) return mr->ram && (mr->ram_block->flags & RAM_PROTECTED); } =20 +bool memory_region_can_be_private(MemoryRegion *mr) +{ + return mr->ram_block && mr->ram_block->gmem_fd >=3D 0; +} + uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr) { uint8_t mask =3D mr->dirty_log_mask; --=20 2.34.1