From patchwork Thu Jan 25 03:23:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13529955 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 A3206C47258 for ; Thu, 25 Jan 2024 03:33:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSqSM-0003OP-OD; Wed, 24 Jan 2024 22:31:10 -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 1rSqS4-00031o-FC for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:30:55 -0500 Received: from mgamail.intel.com ([192.198.163.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rSqS0-0001E0-Kb for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:30:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706153448; x=1737689448; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=O90Sz6D/CUBJHW4iQssE9lD+uGaFEj7py9EJ59KxMp8=; b=HQuRXcgd1vHUzz4TNNQ6D7I3xuHX1cuGDNsERgXjnSA6lGiEnITWgt6X oswy/8o0ZUJncK6GnOar5bZCGuVMnALQKjjEgOiQzyH3erDekxZ8Pxr2A 02MGb2Nd3J1fZ8iYhHalXMt5r7S7T8RdDVse9zvz6apgbvMQ1o4uVYbbE LOe7EpCcMrMFqWr633fxJaEl5IvkVbzvyfUoGi33UmvyrFtEUuQatQnB1 vTpD3w0QjzVsKT3BV4SrK5zbQdn4JtN6nxYo1A31SxDmv7hZ/gh9Vahpu jjkn+ygI8Pu0EtrfL5UzVoBDgHRrPvLVq8Rsb3lA8fMjvWjvrBQ2rIWax Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10962"; a="9429749" X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="9429749" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2024 19:27:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2086065" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa005.jf.intel.com with ESMTP; 24 Jan 2024 19:27:39 -0800 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 , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: [PATCH v4 45/66] memory: Introduce memory_region_init_ram_guest_memfd() Date: Wed, 24 Jan 2024 22:23:07 -0500 Message-Id: <20240125032328.2522472-46-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240125032328.2522472-1-xiaoyao.li@intel.com> References: <20240125032328.2522472-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.10; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.5, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.999, HK_RANDOM_FROM=1, 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 --- include/exec/memory.h | 6 ++++++ system/memory.c | 27 +++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index f25959f6d30f..3a7f41b030e8 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1607,6 +1607,12 @@ 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 74f647f2e56f..41049d3e4c9a 100644 --- a/system/memory.c +++ b/system/memory.c @@ -3619,6 +3619,33 @@ 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; + } + + memory_region_set_default_private(mr); + + /* 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,