From mboxrd@z Thu Jan 1 00:00:00 1970 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 C5BEEC54E41 for ; Thu, 29 Feb 2024 06:46:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rfa76-0006X5-NB; Thu, 29 Feb 2024 01:41:53 -0500 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 1rfa6h-0005uD-R3 for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:41:31 -0500 Received: from mgamail.intel.com ([192.198.163.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfa6f-0004qw-Q5 for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:41:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709188885; x=1740724885; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=e+2C9uKtbhbExisrx4zbEuOZzq0QWHDfGmG/4u6UwRk=; b=gXBg7fJmIkP7Jk5CH/2oZ9ewCQXYsHQe96XAAmx75ix1gMHRxtZIXmyR K7OPCE6sq8TyPD+JAMmE84pFJ7+yYl4QYlcF/og3lhPZAktav33UeJ3zj 4r24B9voaSy9HL5ZuwavgPJYkYKDQo4o/muHiXoHjJta0Vx/oKZziN570 W9yXwnlxMOm3XQiMP/HV4BkQ+07LX4XDmNALsbGBpNtVZO8u/rwX2xpGT HGAY5708caNuh+m5UnXkZ6CgCaSP6comeru1WU5uTI9gJj7LkFMjsD+bA ZR1+RrsD3W4elZRwmoGrHoGFuvRt6xnfyU5Jpzy0egHoO8JgeOJvUFAUn Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="3802885" X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="3802885" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 22:41:24 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="8075656" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa007.jf.intel.com with ESMTP; 28 Feb 2024 22:41:18 -0800 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , Eduardo Habkost , Marcel Apfelbaum , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Yanan Wang , "Michael S. Tsirkin" , Richard Henderson , Ani Sinha , Peter Xu , Cornelia Huck , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, Michael Roth , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang , xiaoyao.li@intel.com Subject: [PATCH v5 35/65] memory: Introduce memory_region_init_ram_guest_memfd() Date: Thu, 29 Feb 2024 01:36:56 -0500 Message-Id: <20240229063726.610065-36-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240229063726.610065-1-xiaoyao.li@intel.com> References: <20240229063726.610065-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.15; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.596, HK_RANDOM_FROM=0.999, RCVD_IN_MSPIKE_H2=-0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Introduce memory_region_init_ram_guest_memfd() to allocate private guset memfd on the MemoryRegion initialization. It's for the use case of TDVF, which must be private on TDX case. Signed-off-by: Xiaoyao Li --- Changes in v5: - drop memory_region_set_default_private() because this function is dropped in this v5 series; --- include/exec/memory.h | 6 ++++++ system/memory.c | 25 +++++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 679a8476852e..1e351f6fc875 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1603,6 +1603,12 @@ bool memory_region_init_ram(MemoryRegion *mr, uint64_t size, Error **errp); +bool memory_region_init_ram_guest_memfd(MemoryRegion *mr, + Object *owner, + const char *name, + uint64_t size, + Error **errp); + /** * memory_region_init_rom: Initialize a ROM memory region. * diff --git a/system/memory.c b/system/memory.c index c756950c0c0f..85a22408e9a4 100644 --- a/system/memory.c +++ b/system/memory.c @@ -3606,6 +3606,31 @@ bool memory_region_init_ram(MemoryRegion *mr, return true; } +bool memory_region_init_ram_guest_memfd(MemoryRegion *mr, + Object *owner, + const char *name, + uint64_t size, + Error **errp) +{ + DeviceState *owner_dev; + + if (!memory_region_init_ram_flags_nomigrate(mr, owner, name, size, + RAM_GUEST_MEMFD, errp)) { + return false; + } + + /* This will assert if owner is neither NULL nor a DeviceState. + * We only want the owner here for the purposes of defining a + * unique name for migration. TODO: Ideally we should implement + * a naming scheme for Objects which are not DeviceStates, in + * which case we can relax this restriction. + */ + owner_dev = DEVICE(owner); + vmstate_register_ram(mr, owner_dev); + + return true; +} + bool memory_region_init_rom(MemoryRegion *mr, Object *owner, const char *name, -- 2.34.1