Module Name: src Committed By: martin Date: Fri Jul 14 08:41:18 UTC 2017
Modified Files: src/sys/arch/x86/x86 [netbsd-8]: lapic.c Log Message: Pull up following revision(s) (requested by nonaka in ticket #135): sys/arch/x86/x86/lapic.c: revision 1.60 PR/52266: Before access MSR[APICBASE], need to check if APIC is present. To generate a diff of this commit: cvs rdiff -u -r1.58.2.1 -r1.58.2.2 src/sys/arch/x86/x86/lapic.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/x86/x86/lapic.c diff -u src/sys/arch/x86/x86/lapic.c:1.58.2.1 src/sys/arch/x86/x86/lapic.c:1.58.2.2 --- src/sys/arch/x86/x86/lapic.c:1.58.2.1 Mon Jul 10 12:26:21 2017 +++ src/sys/arch/x86/x86/lapic.c Fri Jul 14 08:41:18 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: lapic.c,v 1.58.2.1 2017/07/10 12:26:21 martin Exp $ */ +/* $NetBSD: lapic.c,v 1.58.2.2 2017/07/14 08:41:18 martin Exp $ */ /*- * Copyright (c) 2000, 2008 The NetBSD Foundation, Inc. @@ -32,7 +32,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: lapic.c,v 1.58.2.1 2017/07/10 12:26:21 martin Exp $"); +__KERNEL_RCSID(0, "$NetBSD: lapic.c,v 1.58.2.2 2017/07/14 08:41:18 martin Exp $"); #include "acpica.h" #include "ioapic.h" @@ -237,7 +237,8 @@ lapic_is_x2apic(void) { uint64_t msr; - if (rdmsr_safe(MSR_APICBASE, &msr) == EFAULT) + if (!ISSET(cpu_feature[0], CPUID_APIC) || + rdmsr_safe(MSR_APICBASE, &msr) == EFAULT) return false; return (msr & (APICBASE_EN | APICBASE_EXTD)) == (APICBASE_EN | APICBASE_EXTD);