From patchwork Thu Sep 14 03:51:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13384362 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 50B3AEE021E for ; Thu, 14 Sep 2023 03:52:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qgdOL-0005mQ-Q5; Wed, 13 Sep 2023 23:51:45 -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 1qgdOK-0005mH-9H for qemu-devel@nongnu.org; Wed, 13 Sep 2023 23:51:44 -0400 Received: from mgamail.intel.com ([134.134.136.24]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qgdOI-0000r7-Hv for qemu-devel@nongnu.org; Wed, 13 Sep 2023 23:51:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694663502; x=1726199502; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Bz7wCSve/nZkE1jWq4TK9eEpAIR2dm0qaoQY8fTWjd8=; b=OCSLnPlrwZEYrx9SB8yPkD6FBxzkTY/4sIwxBx0FDLxEfhtd250L5sC8 pU486caFbudLR2sGcSGXDFzbITmOrpp6uRaXnV95nx9dTpDB+FHk2bLCe nqnqif87auRbZiuSkFoNyHOke/Wuq37draFYx3yrNhRTxlhTK9p+hS8JU VqsgJx/GB5s391Jly7xG89ubtouVZnexKujCbe4fF5Y6BvF2Rn8DoktX/ 2TXE3Fz4jzXVKm7Kts/lLb5KjOuLY2APNODymOnlW65Vj5MYR7BmKnQOn Qnj80SX9avOdQYx2NamNeYqxMgfCEWnPWdGvCUovdS1cbCq06o9Anluz3 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10832"; a="381528331" X-IronPort-AV: E=Sophos;i="6.02,144,1688454000"; d="scan'208";a="381528331" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Sep 2023 20:51:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10832"; a="814500562" X-IronPort-AV: E=Sophos;i="6.02,144,1688454000"; d="scan'208";a="814500562" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by fmsmga004.fm.intel.com with ESMTP; 13 Sep 2023 20:51:37 -0700 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S. Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Cornelia Huck , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com, Michael Roth , isaku.yamahata@gmail.com, Sean Christopherson , Claudio Fontana Subject: [RFC PATCH v2 04/21] memory: Introduce memory_region_has_gmem_fd() Date: Wed, 13 Sep 2023 23:51:00 -0400 Message-Id: <20230914035117.3285885-5-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230914035117.3285885-1-xiaoyao.li@intel.com> References: <20230914035117.3285885-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=134.134.136.24; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Introduce memory_region_has_gmem_fd() to query if the MemoryRegion has KVM gmem fd allocated. Signed-off-by: Xiaoyao Li --- include/exec/memory.h | 10 ++++++++++ softmmu/memory.c | 5 +++++ 2 files changed, 15 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 227cb2578e95..4b8486ca3632 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1674,6 +1674,16 @@ static inline bool memory_region_is_romd(MemoryRegion *mr) */ bool memory_region_is_protected(MemoryRegion *mr); +/** + * memory_region_has_gmem_fd: check whether a memory region has KVM gmem fd + * associated + * + * Returns %true if a memory region's ram_block has valid gmem fd assigned. + * + * @mr: the memory region being queried + */ +bool memory_region_has_gmem_fd(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 7d9494ce7028..e69a5f96d5d1 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1846,6 +1846,11 @@ bool memory_region_is_protected(MemoryRegion *mr) return mr->ram && (mr->ram_block->flags & RAM_PROTECTED); } +bool memory_region_has_gmem_fd(MemoryRegion *mr) +{ + return mr->ram_block && mr->ram_block->gmem_fd >= 0; +} + uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr) { uint8_t mask = mr->dirty_log_mask;