From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932295Ab0JUOOw (ORCPT ); Thu, 21 Oct 2010 10:14:52 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:33929 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932274Ab0JUOOv (ORCPT ); Thu, 21 Oct 2010 10:14:51 -0400 Date: Thu, 21 Oct 2010 16:14:40 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, "H. Peter Anvin" , Thomas Gleixner , Andrew Morton Subject: [GIT PULL] x86/x2apic for v2.6.37 Message-ID: <20101021141440.GA10210@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the x86-x2apic-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-x2apic-for-linus Thanks, Ingo ------------------> Suresh Siddha (3): x86, intr-remap: Set redirection hint in the IRTE x86, intr-remap: Remove IRTE setup duplicate code x86, x2apic: Simplify apic init in SMP and UP builds arch/x86/include/asm/irq_remapping.h | 27 +++++++++++++++++++++++++++ arch/x86/kernel/apic/apic.c | 3 --- arch/x86/kernel/apic/io_apic.c | 25 ++----------------------- arch/x86/kernel/apic/probe_64.c | 3 +++ arch/x86/kernel/smpboot.c | 4 ++-- 5 files changed, 34 insertions(+), 28 deletions(-) diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h index f275e22..8d84150 100644 --- a/arch/x86/include/asm/irq_remapping.h +++ b/arch/x86/include/asm/irq_remapping.h @@ -3,4 +3,31 @@ #define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8) +#ifdef CONFIG_INTR_REMAP +static inline void prepare_irte(struct irte *irte, int vector, + unsigned int dest) +{ + memset(irte, 0, sizeof(*irte)); + + irte->present = 1; + irte->dst_mode = apic->irq_dest_mode; + /* + * Trigger mode in the IRTE will always be edge, and for IO-APIC, the + * actual level or edge trigger will be setup in the IO-APIC + * RTE. This will help simplify level triggered irq migration. + * For more details, see the comments (in io_apic.c) explainig IO-APIC + * irq migration in the presence of interrupt-remapping. + */ + irte->trigger_mode = 0; + irte->dlvry_mode = apic->irq_delivery_mode; + irte->vector = vector; + irte->dest_id = IRTE_DEST(dest); + irte->redir_hint = 1; +} +#else +static void prepare_irte(struct irte *irte, int vector, unsigned int dest) +{ +} +#endif + #endif /* _ASM_X86_IRQ_REMAPPING_H */ diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index e3b534c..8cf86fb 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1665,10 +1665,7 @@ int __init APIC_init_uniprocessor(void) } #endif -#ifndef CONFIG_SMP - enable_IR_x2apic(); default_setup_apic_routing(); -#endif verify_local_APIC(); connect_bsp_APIC(); diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index f1efeba..e8c95a2 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1377,21 +1377,7 @@ int setup_ioapic_entry(int apic_id, int irq, if (index < 0) panic("Failed to allocate IRTE for ioapic %d\n", apic_id); - memset(&irte, 0, sizeof(irte)); - - irte.present = 1; - irte.dst_mode = apic->irq_dest_mode; - /* - * Trigger mode in the IRTE will always be edge, and the - * actual level or edge trigger will be setup in the IO-APIC - * RTE. This will help simplify level triggered irq migration. - * For more details, see the comments above explainig IO-APIC - * irq migration in the presence of interrupt-remapping. - */ - irte.trigger_mode = 0; - irte.dlvry_mode = apic->irq_delivery_mode; - irte.vector = vector; - irte.dest_id = IRTE_DEST(destination); + prepare_irte(&irte, vector, destination); /* Set source-id of interrupt request */ set_ioapic_sid(&irte, apic_id); @@ -3335,14 +3321,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, ir_index = map_irq_to_irte_handle(irq, &sub_handle); BUG_ON(ir_index == -1); - memset (&irte, 0, sizeof(irte)); - - irte.present = 1; - irte.dst_mode = apic->irq_dest_mode; - irte.trigger_mode = 0; /* edge */ - irte.dlvry_mode = apic->irq_delivery_mode; - irte.vector = cfg->vector; - irte.dest_id = IRTE_DEST(dest); + prepare_irte(&irte, cfg->vector, dest); /* Set source-id of interrupt request */ if (pdev) diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c index 83e9be4..f9e4e6a 100644 --- a/arch/x86/kernel/apic/probe_64.c +++ b/arch/x86/kernel/apic/probe_64.c @@ -54,6 +54,9 @@ static int apicid_phys_pkg_id(int initial_apic_id, int index_msb) */ void __init default_setup_apic_routing(void) { + + enable_IR_x2apic(); + #ifdef CONFIG_X86_X2APIC if (x2apic_mode #ifdef CONFIG_X86_UV diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 8b3bfc4..87a8c6b 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1109,8 +1109,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) } set_cpu_sibling_map(0); - enable_IR_x2apic(); - default_setup_apic_routing(); if (smp_sanity_check(max_cpus) < 0) { printk(KERN_INFO "SMP disabled\n"); @@ -1118,6 +1116,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) goto out; } + default_setup_apic_routing(); + preempt_disable(); if (read_apic_id() != boot_cpu_physical_apicid) { panic("Boot APIC ID in local APIC unexpected (%d vs %d)",