From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760955Ab0GTAwI (ORCPT ); Mon, 19 Jul 2010 20:52:08 -0400 Received: from hera.kernel.org ([140.211.167.34]:38742 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757408Ab0GTAwG (ORCPT ); Mon, 19 Jul 2010 20:52:06 -0400 Date: Tue, 20 Jul 2010 00:51:46 GMT From: tip-bot for Suresh Siddha Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, suresh.b.siddha@intel.com, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, suresh.b.siddha@intel.com, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <20100719230205.439900717@sbs-t61.sc.intel.com> References: <20100719230205.439900717@sbs-t61.sc.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/cpu] x86, cpu: Make init_scattered_cpuid_features() consider cpuid subleaves Message-ID: Git-Commit-ID: edb18f8ab02843453306601c4aa697f9691129cd X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Tue, 20 Jul 2010 00:51:46 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: edb18f8ab02843453306601c4aa697f9691129cd Gitweb: http://git.kernel.org/tip/edb18f8ab02843453306601c4aa697f9691129cd Author: Suresh Siddha AuthorDate: Mon, 19 Jul 2010 16:05:50 -0700 Committer: H. Peter Anvin CommitDate: Mon, 19 Jul 2010 16:47:59 -0700 x86, cpu: Make init_scattered_cpuid_features() consider cpuid subleaves Some cpuid features (like xsaveopt) are enumerated using cpuid subleaves. Extend init_scattered_cpuid_features() to take subleaf into account. Signed-off-by: Suresh Siddha LKML-Reference: <20100719230205.439900717@sbs-t61.sc.intel.com> Signed-off-by: H. Peter Anvin --- arch/x86/kernel/cpu/addon_cpuid_features.c | 25 +++++++++++++------------ 1 files changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c index 7369b4c..03cf24a 100644 --- a/arch/x86/kernel/cpu/addon_cpuid_features.c +++ b/arch/x86/kernel/cpu/addon_cpuid_features.c @@ -14,6 +14,7 @@ struct cpuid_bit { u8 reg; u8 bit; u32 level; + u32 sub_leaf; }; enum cpuid_regs { @@ -30,16 +31,16 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) const struct cpuid_bit *cb; static const struct cpuid_bit __cpuinitconst cpuid_bits[] = { - { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 }, - { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 }, - { X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006 }, - { X86_FEATURE_EPB, CR_ECX, 3, 0x00000006 }, - { X86_FEATURE_CPB, CR_EDX, 9, 0x80000007 }, - { X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a }, - { X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a }, - { X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a }, - { X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a }, - { 0, 0, 0, 0 } + { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006, 0 }, + { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006, 0 }, + { X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006, 0 }, + { X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 }, + { X86_FEATURE_CPB, CR_EDX, 9, 0x80000007, 0 }, + { X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a, 0 }, + { X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a, 0 }, + { X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a, 0 }, + { X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a, 0 }, + { 0, 0, 0, 0, 0 } }; for (cb = cpuid_bits; cb->feature; cb++) { @@ -50,8 +51,8 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) max_level > (cb->level | 0xffff)) continue; - cpuid(cb->level, ®s[CR_EAX], ®s[CR_EBX], - ®s[CR_ECX], ®s[CR_EDX]); + cpuid_count(cb->level, cb->sub_leaf, ®s[CR_EAX], + ®s[CR_EBX], ®s[CR_ECX], ®s[CR_EDX]); if (regs[cb->reg] & (1 << cb->bit)) set_cpu_cap(c, cb->feature);