From patchwork Mon Sep 30 09:26:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhenzhong Duan X-Patchwork-Id: 1990860 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=GTs/Wu06; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XHG6q2V2dz1xtM for ; Mon, 30 Sep 2024 19:31:47 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1svCkA-0004I7-ER; Mon, 30 Sep 2024 05:31:02 -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 1svCjs-0002rC-Od for qemu-devel@nongnu.org; Mon, 30 Sep 2024 05:30:45 -0400 Received: from mgamail.intel.com ([198.175.65.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1svCjp-000759-Qd for qemu-devel@nongnu.org; Mon, 30 Sep 2024 05:30:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727688642; x=1759224642; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RrAQkRUYfObcpECM4cNq8g66930XyTTutz9CzXx+Jy4=; b=GTs/Wu06gd7PWN+qiKgb0Fh7b62mWKVgwUqXZP4q6vTD1khhR7mN5pBf ToPF8u2yY5t9pGh8+CIZ/8QAwor8tRC/yjtgzEZvtMbSDLjntP6gZn5IN O5JIiKYLWZj0kfvhqo1zvI12sdBFQfpGQv1UvonZkV8gLeIh/S/UvzDTC 7ujlYw7/G2m+jVP0JYabcXuXxgO5rgDeh6YKemBqO2QvjaIPrqCiw5wr6 QzYL3LO1P4oZD79C708pZCvjFqsxItLWvQweuv3Xg1j08Db+rycaBqhIq DJPMdnPalZAxqS/Ti+brsdN0rsWyL/sjPjkkJMJSfkoFLVCbeLrUWvNK8 A==; X-CSE-ConnectionGUID: tWajr16RRNab8pBk49mQ8g== X-CSE-MsgGUID: UrzHpd7GRT+4GfbleDBliA== X-IronPort-AV: E=McAfee;i="6700,10204,11210"; a="26721876" X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="26721876" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2024 02:30:41 -0700 X-CSE-ConnectionGUID: OVE3Nl2HRqCEeTVEgutNMg== X-CSE-MsgGUID: h4GFLtx3R8y/11sSXlbalQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="77749876" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Sep 2024 02:30:36 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Paolo Bonzini , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum Subject: [PATCH v4 14/17] intel_iommu: Set default aw_bits to 48 in scalable modern mode Date: Mon, 30 Sep 2024 17:26:28 +0800 Message-Id: <20240930092631.2997543-15-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930092631.2997543-1-zhenzhong.duan@intel.com> References: <20240930092631.2997543-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=198.175.65.21; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.095, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org According to VTD spec, stage-1 page table could support 4-level and 5-level paging. However, 5-level paging translation emulation is unsupported yet. That means the only supported value for aw_bits is 48. So default aw_bits to 48 in scalable modern mode. In other cases, it is still default to 39 for backward compatibility. Add a check to ensure user specified value is 48 in modern mode for now. Signed-off-by: Zhenzhong Duan Reviewed-by: Clément Mathieu--Drif --- include/hw/i386/intel_iommu.h | 2 +- hw/i386/intel_iommu.c | 10 +++++++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index b843d069cc..48134bda11 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -45,7 +45,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(IntelIOMMUState, INTEL_IOMMU_DEVICE) #define DMAR_REG_SIZE 0x230 #define VTD_HOST_AW_39BIT 39 #define VTD_HOST_AW_48BIT 48 -#define VTD_HOST_ADDRESS_WIDTH VTD_HOST_AW_39BIT +#define VTD_HOST_AW_AUTO 0xff #define VTD_HAW_MASK(aw) ((1ULL << (aw)) - 1) #define DMAR_REPORT_F_INTR (1) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 91d7b1abfa..068a08f522 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3776,7 +3776,7 @@ static Property vtd_properties[] = { ON_OFF_AUTO_AUTO), DEFINE_PROP_BOOL("x-buggy-eim", IntelIOMMUState, buggy_eim, false), DEFINE_PROP_UINT8("aw-bits", IntelIOMMUState, aw_bits, - VTD_HOST_ADDRESS_WIDTH), + VTD_HOST_AW_AUTO), DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE), DEFINE_PROP_BOOL("x-scalable-mode", IntelIOMMUState, scalable_mode, FALSE), DEFINE_PROP_BOOL("snoop-control", IntelIOMMUState, snoop_control, false), @@ -4683,6 +4683,14 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) } } + if (s->aw_bits == VTD_HOST_AW_AUTO) { + if (s->scalable_modern) { + s->aw_bits = VTD_HOST_AW_48BIT; + } else { + s->aw_bits = VTD_HOST_AW_39BIT; + } + } + if (!s->scalable_modern && s->aw_bits != VTD_HOST_AW_39BIT && s->aw_bits != VTD_HOST_AW_48BIT) { error_setg(errp, "%s mode: supported values for aw-bits are: %d, %d",