From patchwork Mon Apr 22 23:47:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Habkost X-Patchwork-Id: 1088976 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 44p3QW2xGNz9s5c for ; Tue, 23 Apr 2019 09:56:51 +1000 (AEST) Received: from localhost ([127.0.0.1]:45755 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hIinp-0005de-3s for incoming@patchwork.ozlabs.org; Mon, 22 Apr 2019 19:56:49 -0400 Received: from eggs.gnu.org ([209.51.188.92]:44654) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hIimm-00058J-0I for qemu-devel@nongnu.org; Mon, 22 Apr 2019 19:55:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hIif5-0005hx-LU for qemu-devel@nongnu.org; Mon, 22 Apr 2019 19:47:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49898) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hIif5-0005hg-Fg for qemu-devel@nongnu.org; Mon, 22 Apr 2019 19:47:47 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A8ED130842AC; Mon, 22 Apr 2019 23:47:46 +0000 (UTC) Received: from localhost (ovpn-116-9.gru2.redhat.com [10.97.116.9]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3B0CA5D9CA; Mon, 22 Apr 2019 23:47:46 +0000 (UTC) From: Eduardo Habkost To: qemu-devel@nongnu.org Date: Mon, 22 Apr 2019 20:47:41 -0300 Message-Id: <20190422234742.15780-2-ehabkost@redhat.com> In-Reply-To: <20190422234742.15780-1-ehabkost@redhat.com> References: <20190422234742.15780-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Mon, 22 Apr 2019 23:47:46 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/2] i386: x86_cpu_list_feature_names() function X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Jiri Denemark , Richard Henderson , Eduardo Habkost , Igor Mammedov Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Extract feature name listing code from x86_cpu_class_check_missing_features(). It will be reused to return information about CPU filtered features at runtime. Signed-off-by: Eduardo Habkost --- target/i386/cpu.c | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index d6bb57d210..23e55a9ef2 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -3619,6 +3619,27 @@ static void x86_cpu_parse_featurestr(const char *typename, char *features, static void x86_cpu_expand_features(X86CPU *cpu, Error **errp); static int x86_cpu_filter_features(X86CPU *cpu); +/* Build a list with the name of all features on a feature word array */ +static void x86_cpu_list_feature_names(FeatureWordArray features, + strList **feat_names) +{ + FeatureWord w; + strList **next = feat_names; + + for (w = 0; w < FEATURE_WORDS; w++) { + uint32_t filtered = features[w]; + int i; + for (i = 0; i < 32; i++) { + if (filtered & (1UL << i)) { + strList *new = g_new0(strList, 1); + new->value = g_strdup(x86_cpu_feature_name(w, i)); + *next = new; + next = &new->next; + } + } + } +} + /* Check for missing features that may prevent the CPU class from * running using the current machine and accelerator. */ @@ -3626,7 +3647,6 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc, strList **missing_feats) { X86CPU *xc; - FeatureWord w; Error *err = NULL; strList **next = missing_feats; @@ -3653,18 +3673,7 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc, x86_cpu_filter_features(xc); - for (w = 0; w < FEATURE_WORDS; w++) { - uint32_t filtered = xc->filtered_features[w]; - int i; - for (i = 0; i < 32; i++) { - if (filtered & (1UL << i)) { - strList *new = g_new0(strList, 1); - new->value = g_strdup(x86_cpu_feature_name(w, i)); - *next = new; - next = &new->next; - } - } - } + x86_cpu_list_feature_names(xc->filtered_features, next); object_unref(OBJECT(xc)); }