From patchwork Wed Jan 18 02:02:28 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Sun X-Patchwork-Id: 9522451 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7E3976043D for ; Wed, 18 Jan 2017 02:06:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EC8128544 for ; Wed, 18 Jan 2017 02:06:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 61C9E28554; Wed, 18 Jan 2017 02:06:27 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DAC5B28544 for ; Wed, 18 Jan 2017 02:06:26 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cTfbf-0005WV-1N; Wed, 18 Jan 2017 02:04:11 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cTfbe-0005WK-Kw for xen-devel@lists.xenproject.org; Wed, 18 Jan 2017 02:04:10 +0000 Received: from [85.158.137.68] by server-16.bemta-3.messagelabs.com id A7/9D-03637-91DCE785; Wed, 18 Jan 2017 02:04:09 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrPLMWRWlGSWpSXmKPExsVywNykQlfybF2 EweGVEhbft0xmcmD0OPzhCksAYxRrZl5SfkUCa8a5tb9ZCpbKVHzp+M7YwPhCtIuRk0NIoFJi 8aGVbCC2hACvxJFlM1ghbD+Jn6euAtlcQDUNjBL9j6eygyTYBNQlHn/tYQKxRQSUJO6tmswEU sQs0M0ksfLhVhaQhLBAtMThd8/AJrEIqEr07LzICGLzCrhLzFq0AmqbnMTJY5PBajgFPCR6z8 9mhbjIXeLS6bVsExh5FzAyrGLUKE4tKkst0jUy0ksqykzPKMlNzMzRNTQw1stNLS5OTE/NSUw q1kvOz93ECAyIegYGxh2MU0/4HWKU5GBSEuXteFwbIcSXlJ9SmZFYnBFfVJqTWnyIUYaDQ0mC 997pugghwaLU9NSKtMwcYGjCpCU4eJREeC+ApHmLCxJzizPTIVKnGBWlxHmPgSQEQBIZpXlwb bB4uMQoKyXMy8jAwCDEU5BalJtZgir/ilGcg1FJmFfyDNAUnsy8Erjpr4AWMwEtvq5TDbK4JB EhJdXA6GK/N/+g1NOpeosdT9eG6/4+uTG4mC/k8JfaKwtEG7nX/HCc+ETzbEBVSTXPFHsOg4R V3Ls2bBZ5uGgJ398dH0RvqfL29vl11pi/WDi5xWqBv8jqmhKTI5JCR9ezNij1v52XEc94/z+L 6MTA/IP7fggKV1382ujwcNXi5nNtokGR6VGrspS5lFiKMxINtZiLihMBtlcnVoICAAA= X-Env-Sender: yi.y.sun@linux.intel.com X-Msg-Ref: server-8.tower-31.messagelabs.com!1484705037!81141171!6 X-Originating-IP: [192.55.52.120] X-SpamReason: No, hits=0.5 required=7.0 tests=BODY_RANDOM_LONG X-StarScan-Received: X-StarScan-Version: 9.1.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 14998 invoked from network); 18 Jan 2017 02:04:08 -0000 Received: from mga04.intel.com (HELO mga04.intel.com) (192.55.52.120) by server-8.tower-31.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 18 Jan 2017 02:04:08 -0000 Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP; 17 Jan 2017 18:04:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,247,1477983600"; d="scan'208";a="54503250" Received: from vmmmba-s2600wft.bj.intel.com ([10.240.193.63]) by fmsmga005.fm.intel.com with ESMTP; 17 Jan 2017 18:04:06 -0800 From: Yi Sun To: xen-devel@lists.xenproject.org Date: Wed, 18 Jan 2017 10:02:28 +0800 Message-Id: <1484704967-5609-6-git-send-email-yi.y.sun@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1484704967-5609-1-git-send-email-yi.y.sun@linux.intel.com> References: <1484704967-5609-1-git-send-email-yi.y.sun@linux.intel.com> Cc: wei.liu2@citrix.com, konrad.wilk@oracle.com, andrew.cooper3@citrix.com, dario.faggioli@citrix.com, he.chen@linux.intel.com, ian.jackson@eu.citrix.com, Yi Sun , mengxu@cis.upenn.edu, jbeulich@suse.com, chao.p.peng@linux.intel.com Subject: [Xen-devel] [PATCH v5 05/24] x86: refactor psr: implement Domain init/free and schedule flows. X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch implements the Domain init/free and schedule flows. Signed-off-by: Yi Sun --- xen/arch/x86/psr.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c index e9dc07a..7f06235 100644 --- a/xen/arch/x86/psr.c +++ b/xen/arch/x86/psr.c @@ -50,6 +50,8 @@ */ #define MAX_COS_REG_CNT 128 +#define PSR_ASSOC_REG_POS 32 + /* * PSR features are managed per socket. Below structure defines the members * used to manage these features. @@ -211,7 +213,13 @@ static void l3_cat_init_feature(struct cpuid_leaf_regs regs, feat->info.l3_cat_info.cbm_len); } +static unsigned int l3_cat_get_cos_max(const struct feat_node *feat) +{ + return feat->info.l3_cat_info.cos_max; +} + static const struct feat_ops l3_cat_ops = { + .get_cos_max = l3_cat_get_cos_max, }; static void __init parse_psr_bool(char *s, char *value, char *feature, @@ -355,11 +363,33 @@ void psr_free_rmid(struct domain *d) d->arch.psr_rmid = 0; } +static inline unsigned int get_max_cos_max(const struct psr_socket_info *info) +{ + const struct feat_node *feat; + unsigned int cos_max = 0; + + list_for_each_entry(feat, &info->feat_list, list) + cos_max = max(feat->ops.get_cos_max(feat), cos_max); + + return cos_max; +} + static inline void psr_assoc_init(void) { struct psr_assoc *psra = &this_cpu(psr_assoc); - if ( psr_cmt_enabled() ) + if ( socket_info ) + { + unsigned int socket = cpu_to_socket(smp_processor_id()); + const struct psr_socket_info *info = socket_info + socket; + unsigned int cos_max = get_max_cos_max(info); + + if ( info->feat_mask ) + psra->cos_mask = ((1ull << get_count_order(cos_max)) - 1) << + PSR_ASSOC_REG_POS; + } + + if ( psr_cmt_enabled() || psra->cos_mask ) rdmsrl(MSR_IA32_PSR_ASSOC, psra->val); } @@ -368,6 +398,13 @@ static inline void psr_assoc_rmid(uint64_t *reg, unsigned int rmid) *reg = (*reg & ~rmid_mask) | (rmid & rmid_mask); } +static inline void psr_assoc_cos(uint64_t *reg, unsigned int cos, + uint64_t cos_mask) +{ + *reg = (*reg & ~cos_mask) | + (((uint64_t)cos << PSR_ASSOC_REG_POS) & cos_mask); +} + void psr_ctxt_switch_to(struct domain *d) { struct psr_assoc *psra = &this_cpu(psr_assoc); @@ -376,6 +413,11 @@ void psr_ctxt_switch_to(struct domain *d) if ( psr_cmt_enabled() ) psr_assoc_rmid(®, d->arch.psr_rmid); + if ( psra->cos_mask ) + psr_assoc_cos(®, d->arch.psr_cos_ids ? + d->arch.psr_cos_ids[cpu_to_socket(smp_processor_id())] : + 0, psra->cos_mask); + if ( reg != psra->val ) { wrmsrl(MSR_IA32_PSR_ASSOC, reg); @@ -401,14 +443,32 @@ int psr_set_l3_cbm(struct domain *d, unsigned int socket, return 0; } +/* Called with domain lock held, no extra lock needed for 'psr_cos_ids' */ +static void psr_free_cos(struct domain *d) +{ + if( !d->arch.psr_cos_ids ) + return; + + xfree(d->arch.psr_cos_ids); + d->arch.psr_cos_ids = NULL; +} + int psr_domain_init(struct domain *d) { + if ( socket_info ) + { + d->arch.psr_cos_ids = xzalloc_array(unsigned int, nr_sockets); + if ( !d->arch.psr_cos_ids ) + return -ENOMEM; + } + return 0; } void psr_domain_free(struct domain *d) { psr_free_rmid(d); + psr_free_cos(d); } static void cpu_init_work(void)