Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp1091135pxb; Sun, 21 Feb 2021 11:07:18 -0800 (PST) X-Google-Smtp-Source: ABdhPJzA7URCkHQNnE8ZKKJi/z7G9L3AYoi2PDCDeb9suLUZt4OH1DzascpfG4gtDT7dKGLW5u+8 X-Received: by 2002:aa7:c141:: with SMTP id r1mr4721031edp.284.1613934438141; Sun, 21 Feb 2021 11:07:18 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1613934438; cv=none; d=google.com; s=arc-20160816; b=sj2kQiZdJH0uI7uSOp97iC/JFNcP59f+YAXtMJNGlhY1MR6S/efeuNpSCh5mpDFqsa crN/5rAySneS6URHiNQ+bGMpyxRW+21y/hNO2lgudEp/GjHhdI1RVEJqGMlxuqD5Clx3 /FSmX2oT+1A6LKsgxaCGDeRGSJaLrA9dTZXou+F3aPu46IF3qN0iRGzadZF/rcA43zct o8ReYveH6fwJFvnZXktEtT+7L2wp6NCUyW/qZFevmm42Nf3WzBvEkbvZnrey8fDqo/0K GDEcq6Ppl0h4o+hbo5N2Ns/dZlamSD/l7DN2o/KQ5V3i+8Hp7Resi/hRtSudo7FXLnW6 sbqA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :cc:to:from:ironport-sdr:ironport-sdr; bh=U8R2OBeCyyesOip7jxR4q31b1NDIVD5nZ6SzpTPuUws=; b=QIzBAJooVXleqyNVHJo3xkg0UAA/eRJHo4VWLzG5hHikvrPLLj0/J+kLYBdbwli1e8 u4uGBD383fjnu0J2fQS04Z0n98bcULCQcPGzNH7fkGwnS6XektNyTT9Ln9RuggF3aPir Jx5uBZmCo8F8oIee3k1g3vCLfA1+IfM4kYzEFPX40iI++MxcrrGR/xexSfV2ewL6TDJG 8oY95FpVOGL/GQDiuJ1TTFNqZOf58dG+E4vawKVOk7V5T6NhH+ar3NEtXXhWi7rb9tfU U3dyXdRpElLH1HiKNxnA5GaTxJwoZLsoOgLsOimzxV3XmrDqMX2lmQh9I/4L18iplR+w /iwQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id bi18si10397115ejb.369.2021.02.21.11.06.56; Sun, 21 Feb 2021 11:07:18 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230304AbhBUTGJ (ORCPT + 99 others); Sun, 21 Feb 2021 14:06:09 -0500 Received: from mga07.intel.com ([134.134.136.100]:53122 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230391AbhBUTC3 (ORCPT ); Sun, 21 Feb 2021 14:02:29 -0500 IronPort-SDR: OX4vAyV1yyk3JGxORkgWk9UfS5RrAgRhuwdgLmgWSv3XyFZ+l+CblB+2LbMhG0JoPeER+S12+E 7SsDAY53RR3A== X-IronPort-AV: E=McAfee;i="6000,8403,9902"; a="248330325" X-IronPort-AV: E=Sophos;i="5.81,195,1610438400"; d="scan'208";a="248330325" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2021 11:01:29 -0800 IronPort-SDR: ChmxsxYV8wdGAv3hd4Sdee6g4To+JpqeOd7rxl63lwfi9NflOtuzX9LFIcFlAROQajovQ5qOqu IFTvTxJI/iTw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,195,1610438400"; d="scan'208";a="429792139" Received: from chang-linux-3.sc.intel.com ([172.25.66.175]) by FMSMGA003.fm.intel.com with ESMTP; 21 Feb 2021 11:01:29 -0800 From: "Chang S. Bae" To: bp@suse.de, luto@kernel.org, tglx@linutronix.de, mingo@kernel.org, x86@kernel.org Cc: len.brown@intel.com, dave.hansen@intel.com, jing2.liu@intel.com, ravi.v.shankar@intel.com, linux-kernel@vger.kernel.org, chang.seok.bae@intel.com Subject: [PATCH v4 19/22] x86/fpu/amx: Enable the AMX feature in 64-bit mode Date: Sun, 21 Feb 2021 10:56:34 -0800 Message-Id: <20210221185637.19281-20-chang.seok.bae@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210221185637.19281-1-chang.seok.bae@intel.com> References: <20210221185637.19281-1-chang.seok.bae@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In 64-bit mode, include the AMX state components in XFEATURE_MASK_USER_SUPPORTED. The XFD feature will be used to dynamically expand the xstate per-task buffer on the first use. Signed-off-by: Chang S. Bae Reviewed-by: Len Brown Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org --- arch/x86/include/asm/fpu/xstate.h | 3 ++- arch/x86/kernel/fpu/init.c | 8 ++++++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h index 4112dbf05f19..9e5c28f3beaa 100644 --- a/arch/x86/include/asm/fpu/xstate.h +++ b/arch/x86/include/asm/fpu/xstate.h @@ -34,7 +34,8 @@ XFEATURE_MASK_Hi16_ZMM | \ XFEATURE_MASK_PKRU | \ XFEATURE_MASK_BNDREGS | \ - XFEATURE_MASK_BNDCSR) + XFEATURE_MASK_BNDCSR | \ + XFEATURE_MASK_XTILE) /* All currently supported supervisor features */ #define XFEATURE_MASK_SUPERVISOR_SUPPORTED (XFEATURE_MASK_PASID) diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c index f2fcdcc979e7..046889f31037 100644 --- a/arch/x86/kernel/fpu/init.c +++ b/arch/x86/kernel/fpu/init.c @@ -219,8 +219,12 @@ static void __init fpu__init_system_xstate_size_legacy(void) */ u64 __init fpu__get_supported_xfeatures_mask(void) { - return XFEATURE_MASK_USER_SUPPORTED | - XFEATURE_MASK_SUPERVISOR_SUPPORTED; + u64 mask = XFEATURE_MASK_USER_SUPPORTED | XFEATURE_MASK_SUPERVISOR_SUPPORTED; + + if (!IS_ENABLED(CONFIG_X86_64)) + mask &= ~(XFEATURE_MASK_XTILE); + + return mask; } /* Legacy code to initialize eager fpu mode. */ -- 2.17.1