From patchwork Fri Aug 18 09:50:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13357638 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 528C8C05052 for ; Fri, 18 Aug 2023 10:00:22 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qWwFB-00025f-Fy; Fri, 18 Aug 2023 05:58:13 -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 1qWwEu-0001Fl-Nj for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:57:56 -0400 Received: from mgamail.intel.com ([192.55.52.120]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWwEq-0000Ev-QT for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:57:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692352672; x=1723888672; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XabXP6JP3sejMLekoNMw0ETqyZk6aS55bs9uwl4rtrA=; b=QvUygY6UYG+9OY4HQaB1r8GSdo7Jw0JVZKnQrhK/FOdV/SCRzZkZGiOu Fw26dE7ACTZtt9g2HTl/dxhDEb6/d5au8u01wb5K+gV0FSKj+c6zNCbWA D8JKQTJAIE/Y0wD9HMu8sNtxgW2yYRCRylJpwnRpvLxGnhlQo9D1jeuMC WJDngJhNDAy1kXYAceauCGhcTyryGP5LXT4R9wqS3gG2mcuo4G4x6f3RC MSjmdAesSvlATVMDNl4uaGhUd43M0xxi+t5eUkvKCPp+oWiS0E63Gg6Ac ex6EAkwPaCx+6/1caQ3uMu/fU5y4hUi3+ZIBkBrsSKhLXAsx/HssRbj2e g==; X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="371966107" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="371966107" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2023 02:56:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="849235196" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="849235196" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.46]) by fmsmga002.fm.intel.com with ESMTP; 18 Aug 2023 02:56:27 -0700 From: Xiaoyao Li To: Paolo Bonzini , Richard Henderson , "Michael S. Tsirkin" , Marcel Apfelbaum , Igor Mammedov , Ani Sinha , Peter Xu , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?Dani?= =?utf-8?q?el_P=2E_Berrang=C3=A9?= , Cornelia Huck , Eric Blake , Markus Armbruster , Marcelo Tosatti , Gerd Hoffmann Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Eduardo Habkost , Laszlo Ersek , xiaoyao.li@intel.com, Isaku Yamahata , erdemaktas@google.com, Chenyi Qiang Subject: [PATCH v2 24/58] i386/tdx: Create kvm gmem for TD Date: Fri, 18 Aug 2023 05:50:07 -0400 Message-Id: <20230818095041.1973309-25-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230818095041.1973309-1-xiaoyao.li@intel.com> References: <20230818095041.1973309-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.120; 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=-0.021, 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, 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 From: Isaku Yamahata Allocate private gmem for TD guest, if the MemoryRegion is memory backend and has private property on. Signed-off-by: Isaku Yamahata Signed-off-by: Xiaoyao Li --- target/i386/kvm/tdx.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 775110f8bd02..f1305191e939 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -19,6 +19,7 @@ #include "sysemu/kvm.h" #include "sysemu/sysemu.h" #include "exec/address-spaces.h" +#include "exec/ramblock.h" #include "hw/i386/x86.h" #include "kvm_i386.h" @@ -582,8 +583,30 @@ out: static void tdx_guest_region_add(MemoryListener *listener, MemoryRegionSection *section) { - if (memory_region_can_be_private(section->mr)) { - memory_region_set_default_private(section->mr); + MemoryRegion *mr = section->mr; + Object *owner = memory_region_owner(mr); + + if (owner && object_dynamic_cast(owner, TYPE_MEMORY_BACKEND) && + object_property_get_bool(owner, "private", NULL) && + mr->ram_block && mr->ram_block->gmem_fd < 0) { + struct kvm_create_guest_memfd gmem = { + .size = memory_region_size(mr), + /* TODO: add property to hostmem backend for huge pmd */ + .flags = KVM_GUEST_MEMFD_ALLOW_HUGEPAGE, + }; + int fd; + + fd = kvm_vm_ioctl(kvm_state, KVM_CREATE_GUEST_MEMFD, &gmem); + if (fd < 0) { + fprintf(stderr, "%s: error creating gmem: %s\n", __func__, + strerror(-fd)); + abort(); + } + memory_region_set_gmem_fd(mr, fd); + } + + if (memory_region_can_be_private(mr)) { + memory_region_set_default_private(mr); } }