From nobody Wed Dec 17 01:48:00 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E205EE49B2 for ; Fri, 25 Aug 2023 12:16:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244609AbjHYMPw (ORCPT ); Fri, 25 Aug 2023 08:15:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53370 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244587AbjHYMPm (ORCPT ); Fri, 25 Aug 2023 08:15:42 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7D6AE6B; Fri, 25 Aug 2023 05:15:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692965739; x=1724501739; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EqWauSa44/f12/BVF8Zj9prwsDlMLHzsaxtt+I6+Nhg=; b=f7B8Ph/lkO11FwcDKK2M0bsw7Gc839RiNtdw6kYH7TD4Y/wHvj9OkK6L TyfSiYFulcZZQJXVrGvZ/xh23XVX2NNfFGwjMZgJSf7kAY8SfN2jy45V7 gGzVWcDj5i+iNa8AGBRiXPg4lxKY9n02DgIJuMA9UUULDcpmxZ2x+kcsV B8txzclLXbvrVJcAxVOLwy9RIjERJ5E+1KqvK8lmPax72oRZBp3ipVmge f9JUAKdXHxtGQrjw9HyW2mQ+/YDUu/EG5iNNhQF21JFbz07W/QGpqMEzi 98ZALCSP6TnSVfIcSBM/m8OClIcoHq/WstZNfpBXfzYvA4WKBm2/Nw3Y3 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10812"; a="438639112" X-IronPort-AV: E=Sophos;i="6.02,195,1688454000"; d="scan'208";a="438639112" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2023 05:15:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="881157994" Received: from vnaikawa-mobl1.amr.corp.intel.com (HELO khuang2-desk.gar.corp.intel.com) ([10.209.185.177]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2023 05:15:09 -0700 From: Kai Huang To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: x86@kernel.org, dave.hansen@intel.com, kirill.shutemov@linux.intel.com, tony.luck@intel.com, peterz@infradead.org, tglx@linutronix.de, bp@alien8.de, mingo@redhat.com, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, david@redhat.com, dan.j.williams@intel.com, rafael.j.wysocki@intel.com, ashok.raj@intel.com, reinette.chatre@intel.com, len.brown@intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, ying.huang@intel.com, chao.gao@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, nik.borisov@suse.com, bagasdotme@gmail.com, sagis@google.com, imammedo@redhat.com, kai.huang@intel.com Subject: [PATCH v13 02/22] x86/tdx: Define TDX supported page sizes as macros Date: Sat, 26 Aug 2023 00:14:21 +1200 Message-ID: <39174b01de1b0a16eded0982487a5b6a4fda6318.1692962263.git.kai.huang@intel.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" TDX supports 4K, 2M and 1G page sizes. The corresponding values are defined by the TDX module spec and used as TDX module ABI. Currently, they are used in try_accept_one() when the TDX guest tries to accept a page. However currently try_accept_one() uses hard-coded magic values. Define TDX supported page sizes as macros and get rid of the hard-coded values in try_accept_one(). TDX host support will need to use them too. Signed-off-by: Kai Huang Reviewed-by: Kirill A. Shutemov Reviewed-by: Dave Hansen Reviewed-by: David Hildenbrand --- arch/x86/coco/tdx/tdx-shared.c | 6 +++--- arch/x86/include/asm/shared/tdx.h | 5 +++++ 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/x86/coco/tdx/tdx-shared.c b/arch/x86/coco/tdx/tdx-shared.c index 78e413269791..1655aa56a0a5 100644 --- a/arch/x86/coco/tdx/tdx-shared.c +++ b/arch/x86/coco/tdx/tdx-shared.c @@ -22,13 +22,13 @@ static unsigned long try_accept_one(phys_addr_t start, = unsigned long len, */ switch (pg_level) { case PG_LEVEL_4K: - page_size =3D 0; + page_size =3D TDX_PS_4K; break; case PG_LEVEL_2M: - page_size =3D 1; + page_size =3D TDX_PS_2M; break; case PG_LEVEL_1G: - page_size =3D 2; + page_size =3D TDX_PS_1G; break; default: return 0; diff --git a/arch/x86/include/asm/shared/tdx.h b/arch/x86/include/asm/share= d/tdx.h index 8d1427562c63..257a41d0a36d 100644 --- a/arch/x86/include/asm/shared/tdx.h +++ b/arch/x86/include/asm/shared/tdx.h @@ -52,6 +52,11 @@ (TDX_RDX | TDX_RBX | TDX_RSI | TDX_RDI | TDX_R8 | TDX_R9 | \ TDX_R10 | TDX_R11 | TDX_R12 | TDX_R13 | TDX_R14 | TDX_R15) =20 +/* TDX supported page sizes from the TDX module ABI. */ +#define TDX_PS_4K 0 +#define TDX_PS_2M 1 +#define TDX_PS_1G 2 + #ifndef __ASSEMBLY__ =20 /* --=20 2.41.0