From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755507AbYHRQq0 (ORCPT ); Mon, 18 Aug 2008 12:46:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754864AbYHRQpt (ORCPT ); Mon, 18 Aug 2008 12:45:49 -0400 Received: from fg-out-1718.google.com ([72.14.220.159]:28003 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754080AbYHRQps (ORCPT ); Mon, 18 Aug 2008 12:45:48 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=ioYKA9RWOFhduhRBWxMz2nMCZL1f0qeKU88S1/f+CmNAEMhaS3gXTyQzsh24vqVwDH YQkaKeSMDDUpxWZfJqiME7kpFYGh6OReowihnTx6ucc6Jgg+TGvXOjNCJROx1no86fxx 6q5LjRWneHeXlO0C42qiBMpjalNhm2IFFVCro= From: Cyrill Gorcunov To: mingo@elte.hu, macro@linux-mips.org Cc: hpa@zytor.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, Cyrill Gorcunov Subject: [PATCH 03/15] x86: apic - unify disable_local_APIC Date: Mon, 18 Aug 2008 20:45:51 +0400 Message-Id: X-Mailer: git-send-email 1.6.0.rc1.34.g0fe8c In-Reply-To: <1219077963-22883-1-git-send-email-gorcunov@gmail.com> References: <1219077963-22883-1-git-send-email-gorcunov@gmail.com> In-Reply-To: <8d555f8d496693d05b9e0836f18f62b1adb313c8.1219073223.git.gorcunov@gmail.com> References: <8d555f8d496693d05b9e0836f18f62b1adb313c8.1219073223.git.gorcunov@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Cyrill Gorcunov --- arch/x86/kernel/apic_32.c | 4 +++- arch/x86/kernel/apic_64.c | 14 ++++++++++++++ 2 files changed, 17 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c index 80db3e0..13c4b79 100644 --- a/arch/x86/kernel/apic_32.c +++ b/arch/x86/kernel/apic_32.c @@ -796,7 +796,7 @@ void clear_local_APIC(void) */ void disable_local_APIC(void) { - unsigned long value; + unsigned int value; clear_local_APIC(); @@ -808,6 +808,7 @@ void disable_local_APIC(void) value &= ~APIC_SPIV_APIC_ENABLED; apic_write(APIC_SPIV, value); +#ifdef CONFIG_X86_32 /* * When LAPIC was disabled by the BIOS and enabled by the kernel, * restore the disabled state. @@ -819,6 +820,7 @@ void disable_local_APIC(void) l &= ~MSR_IA32_APICBASE_ENABLE; wrmsr(MSR_IA32_APICBASE, l, h); } +#endif } /* diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index 46acb9b..4fb903b 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -691,6 +691,20 @@ void disable_local_APIC(void) value = apic_read(APIC_SPIV); value &= ~APIC_SPIV_APIC_ENABLED; apic_write(APIC_SPIV, value); + +#ifdef CONFIG_X86_32 + /* + * When LAPIC was disabled by the BIOS and enabled by the kernel, + * restore the disabled state. + */ + if (enabled_via_apicbase) { + unsigned int l, h; + + rdmsr(MSR_IA32_APICBASE, l, h); + l &= ~MSR_IA32_APICBASE_ENABLE; + wrmsr(MSR_IA32_APICBASE, l, h); + } +#endif } void lapic_shutdown(void) -- 1.6.0.rc1.34.g0fe8c