Message ID | 20190508144422.13171-29-kirill.shutemov@linux.intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <owner-linux-mm@kvack.org> Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4DEF21515 for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:47:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3D4D82844B for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:47:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 316642890F; Wed, 8 May 2019 14:47:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9A4252844B for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 8 May 2019 14:47:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B0EDB6B02BA; Wed, 8 May 2019 10:46:15 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id A72236B02BB; Wed, 8 May 2019 10:46:15 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9102C6B02BD; Wed, 8 May 2019 10:46:15 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) by kanga.kvack.org (Postfix) with ESMTP id 5703F6B02BB for <linux-mm@kvack.org>; Wed, 8 May 2019 10:46:15 -0400 (EDT) Received: by mail-pg1-f199.google.com with SMTP id d22so121618pgg.2 for <linux-mm@kvack.org>; Wed, 08 May 2019 07:46:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=x4/Z50S2DWAd5rYId6h1vAEZLevWJ2xcvSwXBFBahYU=; b=rTs3LW4Y442i22owHhS66Db38yser9EzYK8tS6a3UVqYr2fczLDPGtFHiG3/aCAmIT BWijJJt1XuBowyl5eCGp8rQeIMVaguybr+EyZKT8W9bbWrn0tIKNGRnPQXpJLQ3s9QAR +C/IalMAYhZm556kOHN7zhAG6GnccFDvxXJScJWRj38T1A+RJjC9dv0xjcvLtpaGh3jm slZKaYtYVlyIIAATAGB+W+b8YIZZgzGJHGzIfTRAKlfTB8Z+c4IA2iGS3KXhI/b3IJkW ThqRzUFjQzZJli4MniTuMWp5rm2gVlmFvnp2otXCezaiQ1NGri6THWup3DImQtP6eAz1 S/Jw== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.43 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Gm-Message-State: APjAAAXwBOVzFHwKlISoYKpYN3Gw74KH+WqjvKkp/fStbvNZHC7UUs/W xnq2PB9ZcO/t2mGf1SEQCC7sqTKPcdcn/xHSM3BXkBmrKvN/+iuveXrWzneg9M0GrK5q15N0brB PHuUytjD5EqLUQOMqsrtiIssctmXpJjkod0xw3WOubtnSzUgMq9zoHsp99R5NkSQOmA== X-Received: by 2002:a63:2d41:: with SMTP id t62mr47971406pgt.113.1557326774990; Wed, 08 May 2019 07:46:14 -0700 (PDT) X-Google-Smtp-Source: APXvYqxpbLZ4ymIks4q1Pv9VVEfIHNR7cQb2iNIBtZq2wD79o2kr9liFayxoIJwyEaK90weDuivm X-Received: by 2002:a63:2d41:: with SMTP id t62mr47960942pgt.113.1557326684949; Wed, 08 May 2019 07:44:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1557326684; cv=none; d=google.com; s=arc-20160816; b=xiDKcpFZ2hp393FCkWOiIuccMQ0SHwL4wncsritNzXmSPCMzXOyy9W1YzrBdchDsmg UtyNtj77S+pcy1AQArn9J/tBsOM2FZmATHlWmqWg1iEYwDN4kOCBOprEy06U1eW9WXDI 4IWUGbvIqImbVrKsZg4yTc3jOCaCfvlpQOZBQx8QAmnCYL5BdR0aj4p3M7rd9IV5nU/5 G6ieiDILeHx31eYeOr6a9HyuvFGk9lTKzFfJfI/FG6ZphBaUrSyzEUUvWB5Rmhh1miMn aRIpppNnev+kOxh6J4ojePoN2IkSpAhHs/oooGP8eE89jXCVimiCp4+464FOHYFqMMfs B33w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=x4/Z50S2DWAd5rYId6h1vAEZLevWJ2xcvSwXBFBahYU=; b=0OgsiqgCstek+mNWuxRofwS1rzM8lQdWGdYXUctSii+cPxfTTLcfpKN6VEabeVjwfW tSEnMapQwzhKL0Pd7Q6dQr+gGX1ypCqvbkhvRaydNVxvby5hA3lh8yz/FN1UsSzQ684u rYJb5GCej5YvePwSx7SNRli+jip8TKJVBasMbMDjvdZn/Qk4YpqXngAdc6UbxuMaaDrp piJ/2O5q0l1WO7Z5exy8tFyeyia/akjDujk4LE9n4sWxuNeO61ITAeCnlUyx57wySKwY meG1S0L+CvGYBkBbOWS9KC2xk1WJ85ibiitW46z4k/9ypyd2DRwtCwsRVBSilFie8Zku YI7Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.43 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from mga05.intel.com (mga05.intel.com. [192.55.52.43]) by mx.google.com with ESMTPS id 90si19482350plb.86.2019.05.08.07.44.44 for <linux-mm@kvack.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 08 May 2019 07:44:44 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.43 as permitted sender) client-ip=192.55.52.43; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of kirill.shutemov@linux.intel.com designates 192.55.52.43 as permitted sender) smtp.mailfrom=kirill.shutemov@linux.intel.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 May 2019 07:44:44 -0700 X-ExtLoop1: 1 Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 08 May 2019 07:44:40 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 11A32AF7; Wed, 8 May 2019 17:44:30 +0300 (EEST) From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: Andrew Morton <akpm@linux-foundation.org>, x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>, Peter Zijlstra <peterz@infradead.org>, Andy Lutomirski <luto@amacapital.net>, David Howells <dhowells@redhat.com> Cc: Kees Cook <keescook@chromium.org>, Dave Hansen <dave.hansen@intel.com>, Kai Huang <kai.huang@linux.intel.com>, Jacob Pan <jacob.jun.pan@linux.intel.com>, Alison Schofield <alison.schofield@intel.com>, linux-mm@kvack.org, kvm@vger.kernel.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCH, RFC 28/62] keys/mktme: Set up PCONFIG programming targets for MKTME keys Date: Wed, 8 May 2019 17:43:48 +0300 Message-Id: <20190508144422.13171-29-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190508144422.13171-1-kirill.shutemov@linux.intel.com> References: <20190508144422.13171-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Intel MKTME enabling
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expand
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diff --git a/security/keys/mktme_keys.c b/security/keys/mktme_keys.c index 9fdf482ea3e6..b5b44decfd3e 100644 --- a/security/keys/mktme_keys.c +++ b/security/keys/mktme_keys.c @@ -2,6 +2,7 @@ /* Documentation/x86/mktme_keys.rst */ +#include <linux/cpu.h> #include <linux/init.h> #include <linux/key.h> #include <linux/key-type.h> @@ -17,6 +18,8 @@ static DEFINE_SPINLOCK(mktme_lock); struct kmem_cache *mktme_prog_cache; /* Hardware programming cache */ +unsigned long *mktme_target_map; /* Pconfig programming targets */ +cpumask_var_t mktme_leadcpus; /* One lead CPU per pconfig target */ /* 1:1 Mapping between Userspace Keys (struct key) and Hardware KeyIDs */ struct mktme_mapping { @@ -303,6 +306,33 @@ struct key_type key_type_mktme = { .destroy = mktme_destroy_key, }; +static void mktme_update_pconfig_targets(void) +{ + int cpu, target_id; + + cpumask_clear(mktme_leadcpus); + bitmap_clear(mktme_target_map, 0, sizeof(mktme_target_map)); + + for_each_online_cpu(cpu) { + target_id = topology_physical_package_id(cpu); + if (!__test_and_set_bit(target_id, mktme_target_map)) + __cpumask_set_cpu(cpu, mktme_leadcpus); + } +} + +static int mktme_alloc_pconfig_targets(void) +{ + if (!alloc_cpumask_var(&mktme_leadcpus, GFP_KERNEL)) + return -ENOMEM; + + mktme_target_map = bitmap_alloc(topology_max_packages(), GFP_KERNEL); + if (!mktme_target_map) { + free_cpumask_var(mktme_leadcpus); + return -ENOMEM; + } + return 0; +} + static int __init init_mktme(void) { int ret; @@ -320,9 +350,21 @@ static int __init init_mktme(void) if (!mktme_prog_cache) goto free_map; + /* Hardware programming targets */ + if (mktme_alloc_pconfig_targets()) + goto free_cache; + + /* Initialize first programming targets */ + mktme_update_pconfig_targets(); + ret = register_key_type(&key_type_mktme); if (!ret) return ret; /* SUCCESS */ + + free_cpumask_var(mktme_leadcpus); + bitmap_free(mktme_target_map); +free_cache: + kmem_cache_destroy(mktme_prog_cache); free_map: kvfree(mktme_map);