From nobody Tue Nov 26 18:34:32 2024 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=1706153681; cv=none; d=zohomail.com; s=zohoarc; b=TmjKbYFhQpIeJS/fZ7wB3HO+ABvpVyoR+LxCL4+f4Pi/6I61uvJa+F7jDv4fkR/DUK1Sb/KDeF8PRuqLSa1rXCmkWCc1nICPZM0scS0EkxtOrAuaBiB00DNW6wTYGVU0ebrTJVZgzK7tfYL4S4EiCCBmCGLkugnLifnQ2W0pcME= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1706153681; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=KqqBfVTJCAMgZ6+SY78Ti7R0ucJWnVtMvDYPjcKztSY=; b=nZCsvqgyKL6eVUXxIKp7EMKPVNqKF7e/ivt1Adar52LgL0H6yu93A8raLh90pE77Vefq5HLWUHzF+DWIgmhggceLzkIvRHtjcL8uIiQcw7L6+qvuVW8XLPOYnlW0e1M2TV34QWgPWJCrvz1Wq8nxrsJ0GI9f1+OVuMdVT4hRq9A= 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 1706153681134174.90817844752144; Wed, 24 Jan 2024 19:34:41 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSqQ0-0003RU-Ge; Wed, 24 Jan 2024 22:28:44 -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 1rSqPy-0003LN-7A for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:28:42 -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 1rSqPw-0001Dr-DP for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:28:41 -0500 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 19:24:54 -0800 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa005.jf.intel.com with ESMTP; 24 Jan 2024 19:24:49 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706153320; x=1737689320; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HZSXBtuO9BV7mgpoSaqG/s2yi3rjLyCZLZOpye9Y1YI=; b=BGUmjhPUD2ApxoBc3sc1cGzlCsd03rKTW6/WyTU6H++UU8/6TvmNr+wf Vn3Umo8iufKHdi1W7o4XjRqzVVOJtkpY2CjRN4RZhyY064cYqtLllW9UH 2J6MpgVqUj+/SG82bjf9HSagIIwc8NnLG1sePCZ5KQB4Ur34cLvY7XDpi EpbeRaMF5QyvvwHBeVqKfBXKaKZ8baIFOs2kS+nQ7krYOxdEvWxgf8jbP z0DrMRd7gEtqd/wEeWFdGnEl4sARBjqeL6Qb7IX8CtC1Ryx+qEXZVcE97 +obfAT487YuhAs8M42q0QaXV7Mhl4g+sSD06Daby4SfqCxZ6yqr75jIVq A==; X-IronPort-AV: E=McAfee;i="6600,9927,10962"; a="9428299" X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="9428299" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2084965" From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Cornelia Huck , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=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 14/66] i386/tdx: Implement tdx_kvm_init() to initialize TDX VM context Date: Wed, 24 Jan 2024 22:22:36 -0500 Message-Id: <20240125032328.2522472-15-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 Content-Transfer-Encoding: quoted-printable 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=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1706153683000100007 Content-Type: text/plain; charset="utf-8" Introduce tdx_kvm_init() and invoke it in kvm_confidential_guest_init() if it's a TDX VM. Set ms->require_guest_memfd to require kvm guest memfd allocation for any memory backend. More TDX specific initialization will be added later. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- target/i386/kvm/kvm.c | 15 ++++++--------- target/i386/kvm/meson.build | 2 +- target/i386/kvm/tdx-stub.c | 8 ++++++++ target/i386/kvm/tdx.c | 9 +++++++++ target/i386/kvm/tdx.h | 2 ++ 5 files changed, 26 insertions(+), 10 deletions(-) create mode 100644 target/i386/kvm/tdx-stub.c diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index f9a774925cf6..3f1d2272fb06 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -62,6 +62,7 @@ #include "migration/blocker.h" #include "exec/memattrs.h" #include "trace.h" +#include "tdx.h" =20 #include CONFIG_DEVICES =20 @@ -2545,6 +2546,8 @@ static int kvm_confidential_guest_init(MachineState *= ms, Error **errp) { if (object_dynamic_cast(OBJECT(ms->cgs), TYPE_SEV_GUEST)) { return sev_kvm_init(ms->cgs, errp); + } else if (object_dynamic_cast(OBJECT(ms->cgs), TYPE_TDX_GUEST)) { + return tdx_kvm_init(ms, errp); } =20 return 0; @@ -2559,16 +2562,10 @@ int kvm_arch_init(MachineState *ms, KVMState *s) Error *local_err =3D NULL; =20 /* - * Initialize SEV context, if required + * Initialize confidential guest (SEV/TDX) context, if required * - * If no memory encryption is requested (ms->cgs =3D=3D NULL) this is - * a no-op. - * - * It's also a no-op if a non-SEV confidential guest support - * mechanism is selected. SEV is the only mechanism available to - * select on x86 at present, so this doesn't arise, but if new - * mechanisms are supported in future (e.g. TDX), they'll need - * their own initialization either here or elsewhere. + * It's a no-op if a non-SEV/non-tdx confidential guest support + * mechanism is selected, i.e., ms->cgs =3D=3D NULL */ ret =3D kvm_confidential_guest_init(ms, &local_err); if (ret < 0) { diff --git a/target/i386/kvm/meson.build b/target/i386/kvm/meson.build index 6ea0ce27b757..30a90b4d371d 100644 --- a/target/i386/kvm/meson.build +++ b/target/i386/kvm/meson.build @@ -9,7 +9,7 @@ i386_kvm_ss.add(when: 'CONFIG_XEN_EMU', if_true: files('xen= -emu.c')) =20 i386_kvm_ss.add(when: 'CONFIG_SEV', if_false: files('sev-stub.c')) =20 -i386_kvm_ss.add(when: 'CONFIG_TDX', if_true: files('tdx.c')) +i386_kvm_ss.add(when: 'CONFIG_TDX', if_true: files('tdx.c'), if_false: fil= es('tdx-stub.c')) =20 i386_system_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_f= alse: files('hyperv-stub.c')) =20 diff --git a/target/i386/kvm/tdx-stub.c b/target/i386/kvm/tdx-stub.c new file mode 100644 index 000000000000..1d866d5496bf --- /dev/null +++ b/target/i386/kvm/tdx-stub.c @@ -0,0 +1,8 @@ +#include "qemu/osdep.h" + +#include "tdx.h" + +int tdx_kvm_init(MachineState *ms, Error **errp) +{ + return -EINVAL; +} diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index d3792d4a3d56..621a05beeb4e 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -12,10 +12,19 @@ */ =20 #include "qemu/osdep.h" +#include "qapi/error.h" #include "qom/object_interfaces.h" =20 +#include "hw/i386/x86.h" #include "tdx.h" =20 +int tdx_kvm_init(MachineState *ms, Error **errp) +{ + ms->require_guest_memfd =3D true; + + return 0; +} + /* tdx guest */ OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest, tdx_guest, diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 415aeb5af746..c8a23d95258d 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -16,4 +16,6 @@ typedef struct TdxGuest { uint64_t attributes; /* TD attributes */ } TdxGuest; =20 +int tdx_kvm_init(MachineState *ms, Error **errp); + #endif /* QEMU_I386_TDX_H */ --=20 2.34.1