From mboxrd@z Thu Jan 1 00:00:00 1970 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 C1F72C433FE for ; Thu, 10 Mar 2022 17:23:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244799AbiCJRYZ (ORCPT ); Thu, 10 Mar 2022 12:24:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245038AbiCJRXC (ORCPT ); Thu, 10 Mar 2022 12:23:02 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3976219D618 for ; Thu, 10 Mar 2022 09:21:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1646932911; x=1678468911; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fm86wwCN9yDs6lCc+3TkC/46REj4XEfoqrbmWncxwxA=; b=dibV38wsv++5If3Dt+fbxnIysBq+rRy3RL5aK5IK+E0bD46y2VwWvsoi KSrc141XWgC2zzkq+B/cw66NRTD+iYItOR+sPpzHjZjY2jSLi4tLY+nOD zr9+KX/jp3FfvU6i8f2Ko1mrUjeB5IW84eVs4Xta7vHnEIet6SEivKpIX bx5zQhPQKoEgidbHj+QrfDYn/dJFrw8mDzjwW6Vjwi0uCc+IkqjvOd4dj Larenb/8NTG2F6oc10/6eiEfwxuHrTu5BFF53kezK2lh7g1Zm1UpKgTgi mT/n5r0MmoqdqXXAq84ou1eUMAs8KnvL6Z39/APZAyst6ZV8bADOvgi+9 w==; X-IronPort-AV: E=McAfee;i="6200,9189,10282"; a="255260189" X-IronPort-AV: E=Sophos;i="5.90,171,1643702400"; d="scan'208";a="255260189" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2022 09:21:50 -0800 X-IronPort-AV: E=Sophos;i="5.90,171,1643702400"; d="scan'208";a="781532458" Received: from gdavids1-mobl.amr.corp.intel.com (HELO localhost) ([10.212.65.108]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2022 09:21:50 -0800 From: ira.weiny@intel.com To: Dave Hansen , "H. Peter Anvin" , Dan Williams Cc: Ira Weiny , Fenghua Yu , Rick Edgecombe , "Shankar, Ravi V" , linux-kernel@vger.kernel.org Subject: [PATCH V9 38/45] memremap_pages: Reserve a PKS pkey for eventual use by PMEM Date: Thu, 10 Mar 2022 09:20:12 -0800 Message-Id: <20220310172019.850939-39-ira.weiny@intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220310172019.850939-1-ira.weiny@intel.com> References: <20220310172019.850939-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ira Weiny Reserve a pkey for use by the memmap facility and set the default protections to Access Disabled. Signed-off-by: Ira Weiny --- Changes for V9 Adjust for new key allocation From Dave Hansen use pkey --- include/linux/pks-keys.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/pks-keys.h b/include/linux/pks-keys.h index f7e82e462659..32075ac54964 100644 --- a/include/linux/pks-keys.h +++ b/include/linux/pks-keys.h @@ -61,7 +61,9 @@ /* PKS_KEY_DEFAULT must be 0 */ #define PKS_KEY_DEFAULT 0 #define PKS_KEY_TEST PKS_NEW_KEY(PKS_KEY_DEFAULT, CONFIG_PKS_TEST) -#define PKS_KEY_MAX PKS_NEW_KEY(PKS_KEY_TEST, 1) +#define PKS_KEY_PGMAP_PROTECTION \ + PKS_NEW_KEY(PKS_KEY_TEST, CONFIG_DEVMAP_ACCESS_PROTECTION) +#define PKS_KEY_MAX PKS_NEW_KEY(PKS_KEY_PGMAP_PROTECTION, 1) #ifdef CONFIG_PKS_TEST_ALL_KEYS #undef PKS_KEY_MAX @@ -72,6 +74,8 @@ #define PKS_KEY_DEFAULT_INIT PKS_DECLARE_INIT_VALUE(PKS_KEY_DEFAULT, RW, 1) #define PKS_KEY_TEST_INIT PKS_DECLARE_INIT_VALUE(PKS_KEY_TEST, AD, \ CONFIG_PKS_TEST) +#define PKS_KEY_PGMAP_INIT PKS_DECLARE_INIT_VALUE(PKS_KEY_PGMAP_PROTECTION, \ + AD, CONFIG_DEVMAP_ACCESS_PROTECTION) #define PKS_ALL_AD_MASK \ GENMASK(PKS_NUM_PKEYS * PKR_BITS_PER_PKEY, \ @@ -79,7 +83,8 @@ #define PKS_INIT_VALUE ((PKS_ALL_AD & PKS_ALL_AD_MASK) | \ PKS_KEY_DEFAULT_INIT | \ - PKS_KEY_TEST_INIT \ + PKS_KEY_TEST_INIT | \ + PKS_KEY_PGMAP_INIT \ ) #endif /* CONFIG_ARCH_ENABLE_SUPERVISOR_PKEYS */ -- 2.35.1