From owner-svn-src-all@freebsd.org Tue May 17 08:33:41 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DD433B3EFD4; Tue, 17 May 2016 08:33:41 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AE7BD1015; Tue, 17 May 2016 08:33:41 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u4H8Xe3t056295; Tue, 17 May 2016 08:33:40 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u4H8XeAd056294; Tue, 17 May 2016 08:33:40 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201605170833.u4H8XeAd056294@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Tue, 17 May 2016 08:33:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r300036 - stable/10/sys/amd64/amd64 X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 May 2016 08:33:42 -0000 Author: avg Date: Tue May 17 08:33:40 2016 New Revision: 300036 URL: https://svnweb.freebsd.org/changeset/base/300036 Log: MFC r298736: ensure that initial local apic id is sane on AMD 10h systems Modified: stable/10/sys/amd64/amd64/initcpu.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/amd64/amd64/initcpu.c ============================================================================== --- stable/10/sys/amd64/amd64/initcpu.c Tue May 17 08:31:54 2016 (r300035) +++ stable/10/sys/amd64/amd64/initcpu.c Tue May 17 08:33:40 2016 (r300036) @@ -111,6 +111,19 @@ init_amd(void) wrmsr(0xc0011029, rdmsr(0xc0011029) | 1); break; } + + /* + * BIOS may fail to set InitApicIdCpuIdLo to 1 as it should per BKDG. + * So, do it here or otherwise some tools could be confused by + * Initial Local APIC ID reported with CPUID Function 1 in EBX. + */ + if (CPUID_TO_FAMILY(cpu_id) == 0x10) { + if ((cpu_feature2 & CPUID2_HV) == 0) { + msr = rdmsr(MSR_NB_CFG1); + msr |= (uint64_t)1 << 54; + wrmsr(MSR_NB_CFG1, msr); + } + } } /*