From patchwork Thu Sep 12 07:22:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Gao X-Patchwork-Id: 11142491 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C2CDF13BD for ; Thu, 12 Sep 2019 07:20:53 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A899620678 for ; Thu, 12 Sep 2019 07:20:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A899620678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1i8JNl-0001cq-1f; Thu, 12 Sep 2019 07:19:09 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1i8JNj-0001bl-59 for xen-devel@lists.xenproject.org; Thu, 12 Sep 2019 07:19:07 +0000 X-Inumbo-ID: 92b5caf5-d52d-11e9-83e3-12813bfff9fa Received: from mga01.intel.com (unknown [192.55.52.88]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 92b5caf5-d52d-11e9-83e3-12813bfff9fa; Thu, 12 Sep 2019 07:18:53 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Sep 2019 00:18:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,492,1559545200"; d="scan'208";a="189906277" Received: from gao-cwp.sh.intel.com ([10.239.159.26]) by orsmga006.jf.intel.com with ESMTP; 12 Sep 2019 00:18:50 -0700 From: Chao Gao To: xen-devel@lists.xenproject.org Date: Thu, 12 Sep 2019 15:22:21 +0800 Message-Id: <1568272949-1086-9-git-send-email-chao.gao@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1568272949-1086-1-git-send-email-chao.gao@intel.com> References: <1568272949-1086-1-git-send-email-chao.gao@intel.com> Subject: [Xen-devel] [PATCH v10 08/16] microcode: pass a patch pointer to apply_microcode() X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Sergey Dyasli , Ashok Raj , Wei Liu , Andrew Cooper , Jan Beulich , Chao Gao , =?utf-8?q?R?= =?utf-8?q?oger_Pau_Monn=C3=A9?= MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" apply_microcode()'s always loading the cached ucode patch forces a patch to be stored before being loaded. Make apply_microcode() accept a patch pointer to remove the limitation so that a patch can be stored after a successful loading. Signed-off-by: Chao Gao Reviewed-by: Jan Beulich --- xen/arch/x86/microcode.c | 2 +- xen/arch/x86/microcode_amd.c | 5 ++--- xen/arch/x86/microcode_intel.c | 5 ++--- xen/include/asm-x86/microcode.h | 2 +- 4 files changed, 6 insertions(+), 8 deletions(-) diff --git a/xen/arch/x86/microcode.c b/xen/arch/x86/microcode.c index 5c82a2d..b44e4d7 100644 --- a/xen/arch/x86/microcode.c +++ b/xen/arch/x86/microcode.c @@ -208,7 +208,7 @@ int microcode_resume_cpu(void) err = microcode_ops->collect_cpu_info(sig); if ( likely(!err) ) - err = microcode_ops->apply_microcode(); + err = microcode_ops->apply_microcode(microcode_cache); spin_unlock(µcode_mutex); return err; diff --git a/xen/arch/x86/microcode_amd.c b/xen/arch/x86/microcode_amd.c index c96a3b3..c6d2ea3 100644 --- a/xen/arch/x86/microcode_amd.c +++ b/xen/arch/x86/microcode_amd.c @@ -253,7 +253,7 @@ static enum microcode_match_result compare_patch( return MIS_UCODE; } -static int apply_microcode(void) +static int apply_microcode(const struct microcode_patch *patch) { unsigned long flags; uint32_t rev; @@ -261,7 +261,6 @@ static int apply_microcode(void) unsigned int cpu = smp_processor_id(); struct cpu_signature *sig = &per_cpu(cpu_sig, cpu); const struct microcode_header_amd *hdr; - const struct microcode_patch *patch = microcode_get_cache(); if ( !patch ) return -ENOENT; @@ -565,7 +564,7 @@ static int cpu_request_microcode(const void *buf, size_t bufsize) if ( match_cpu(microcode_get_cache()) ) { - error = apply_microcode(); + error = apply_microcode(microcode_get_cache()); if ( error ) break; } diff --git a/xen/arch/x86/microcode_intel.c b/xen/arch/x86/microcode_intel.c index 5f1ae2f..b1ec81d 100644 --- a/xen/arch/x86/microcode_intel.c +++ b/xen/arch/x86/microcode_intel.c @@ -323,7 +323,7 @@ static int get_matching_microcode(const void *mc) return 1; } -static int apply_microcode(void) +static int apply_microcode(const struct microcode_patch *patch) { unsigned long flags; uint64_t msr_content; @@ -331,7 +331,6 @@ static int apply_microcode(void) unsigned int cpu_num = raw_smp_processor_id(); struct cpu_signature *sig = &this_cpu(cpu_sig); const struct microcode_intel *mc_intel; - const struct microcode_patch *patch = microcode_get_cache(); if ( !patch ) return -ENOENT; @@ -429,7 +428,7 @@ static int cpu_request_microcode(const void *buf, size_t size) error = offset; if ( !error && match_cpu(microcode_get_cache()) ) - error = apply_microcode(); + error = apply_microcode(microcode_get_cache()); return error; } diff --git a/xen/include/asm-x86/microcode.h b/xen/include/asm-x86/microcode.h index b0eee0e..02feb09 100644 --- a/xen/include/asm-x86/microcode.h +++ b/xen/include/asm-x86/microcode.h @@ -22,7 +22,7 @@ struct microcode_patch { struct microcode_ops { int (*cpu_request_microcode)(const void *buf, size_t size); int (*collect_cpu_info)(struct cpu_signature *csig); - int (*apply_microcode)(void); + int (*apply_microcode)(const struct microcode_patch *patch); int (*start_update)(void); void (*end_update_percpu)(void); void (*free_patch)(void *mc);