Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752207AbdF3EIK (ORCPT ); Fri, 30 Jun 2017 00:08:10 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:32877 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751577AbdF3EIH (ORCPT ); Fri, 30 Jun 2017 00:08:07 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="20680347" From: Dou Liyang To: , , CC: , , , , , , , , Dou Liyang Subject: [PATCH v5 04/12] x86/apic: Move logical APIC ID away from apic_bsp_setup() Date: Fri, 30 Jun 2017 12:07:32 +0800 Message-ID: <5c6ad9d0779fa59825731d58de37a6786f991d83.1498795030.git.douly.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.167.226.106] X-yoursite-MailScanner-ID: 3F1AA47C654D.A6093 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: douly.fnst@cn.fujitsu.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2282 Lines: 83 apic_bsp_setup() sets and returns logical APIC ID for initializing cpu0_logical_apicid in SMP-capable system. The id has nothing to do with the initialization of local APIC and I/O APIC. And apic_bsp_setup() should be called for interrupt mode setup intently. Move the id setup to native_smp_prepare_cpus() for cleanup and mark apic_bsp_setup() void. Signed-off-by: Dou Liyang --- arch/x86/include/asm/apic.h | 2 +- arch/x86/kernel/apic/apic.c | 10 +--------- arch/x86/kernel/smpboot.c | 7 +++++-- 3 files changed, 7 insertions(+), 12 deletions(-) diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index ddc16ff..c3bedbd 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -146,7 +146,7 @@ static inline int apic_force_enable(unsigned long addr) extern int apic_force_enable(unsigned long addr); #endif -extern int apic_bsp_setup(bool upmode); +extern void apic_bsp_setup(bool upmode); extern void apic_ap_setup(void); /* diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 63220ca..498edbe 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2341,25 +2341,17 @@ static void __init apic_bsp_up_setup(void) * Returns: * apic_id of BSP APIC */ -int __init apic_bsp_setup(bool upmode) +void __init apic_bsp_setup(bool upmode) { - int id; - connect_bsp_APIC(); if (upmode) apic_bsp_up_setup(); setup_local_APIC(); - if (x2apic_mode) - id = apic_read(APIC_LDR); - else - id = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR)); - enable_IO_APIC(); end_local_APIC_setup(); irq_remap_enable_fault_handling(); setup_IO_APIC(); - return id; } /* diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 93f0cda..d6721f0 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1347,8 +1347,11 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) } default_setup_apic_routing(); - cpu0_logical_apicid = apic_bsp_setup(false); - + apic_bsp_setup(false); + if (x2apic_mode) + cpu0_logical_apicid = apic_read(APIC_LDR); + else + cpu0_logical_apicid = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR)); /* Setup local timer */ x86_init.timers.setup_percpu_clockev(); -- 2.5.5