Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758780AbaFUVTR (ORCPT ); Sat, 21 Jun 2014 17:19:17 -0400 Received: from terminus.zytor.com ([198.137.202.10]:36215 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756706AbaFUVTO (ORCPT ); Sat, 21 Jun 2014 17:19:14 -0400 Date: Sat, 21 Jun 2014 14:18:16 -0700 From: tip-bot for Jiang Liu Message-ID: Cc: mingo@kernel.org, konrad.wilk@oracle.com, rdunlap@infradead.org, tony.luck@intel.com, gregkh@linuxfoundation.org, tglx@linutronix.de, hpa@zytor.com, jiang.liu@linux.intel.com, grant.likely@linaro.org, linux-kernel@vger.kernel.org, yinghai@kernel.org, joro@8bytes.org, benh@kernel.crashing.org, bhelgaas@google.com, rjw@rjwysocki.net, paul.gortmaker@windriver.com Reply-To: mingo@kernel.org, konrad.wilk@oracle.com, rdunlap@infradead.org, tony.luck@intel.com, gregkh@linuxfoundation.org, tglx@linutronix.de, hpa@zytor.com, jiang.liu@linux.intel.com, grant.likely@linaro.org, linux-kernel@vger.kernel.org, yinghai@kernel.org, joro@8bytes.org, benh@kernel.crashing.org, bhelgaas@google.com, rjw@rjwysocki.net, paul.gortmaker@windriver.com In-Reply-To: <1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com> References: <1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/apic] x86, irq: Clean up irqdomain transition code Git-Commit-ID: b81975eade8c6495f3c4d6746d22bdc95f617777 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: b81975eade8c6495f3c4d6746d22bdc95f617777 Gitweb: http://git.kernel.org/tip/b81975eade8c6495f3c4d6746d22bdc95f617777 Author: Jiang Liu AuthorDate: Mon, 9 Jun 2014 16:20:11 +0800 Committer: Thomas Gleixner CommitDate: Sat, 21 Jun 2014 23:05:44 +0200 x86, irq: Clean up irqdomain transition code Now we have completely switched to irqdomain, so clean up transition code in IOAPIC drivers. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 28 +++++++++++----------------- 1 file changed, 11 insertions(+), 17 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 8d80a8f..a44dce8 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -86,6 +86,7 @@ static DEFINE_RAW_SPINLOCK(ioapic_lock); static DEFINE_RAW_SPINLOCK(vector_lock); static DEFINE_MUTEX(ioapic_mutex); static unsigned int ioapic_dynirq_base; +static int ioapic_initialized; struct mp_pin_info { int trigger; @@ -1034,13 +1035,8 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, struct irq_domain *domain = mp_ioapic_irqdomain(ioapic); struct mp_pin_info *info = mp_pin_info(ioapic, pin); - if (!domain) { - /* - * Provide an identity mapping of gsi == irq except on truly - * weird platforms that have non isa irqs in the first 16 gsis. - */ - return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; - } + if (!domain) + return -1; mutex_lock(&ioapic_mutex); @@ -2986,6 +2982,8 @@ void __init setup_IO_APIC(void) init_IO_APIC_traps(); if (nr_legacy_irqs()) check_timer(); + + ioapic_initialized = 1; } /* @@ -3461,12 +3459,11 @@ static int __init io_apic_get_redir_entries(int ioapic) unsigned int arch_dynirq_lower_bound(unsigned int from) { - unsigned int min = gsi_top + nr_legacy_irqs(); - - if (ioapic_dynirq_base) - return ioapic_dynirq_base; - - return from < min ? min : from; + /* + * dmar_alloc_hwirq() may be called before setup_IO_APIC(), so use + * gsi_top if ioapic_dynirq_base hasn't been initialized yet. + */ + return ioapic_initialized ? ioapic_dynirq_base : gsi_top; } int __init arch_probe_nr_irqs(void) @@ -3841,10 +3838,7 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, ioapics[idx].mp_config.flags = MPC_APIC_USABLE; ioapics[idx].mp_config.apicaddr = address; ioapics[idx].irqdomain = NULL; - if (cfg) - ioapics[idx].irqdomain_cfg = *cfg; - else - ioapics[idx].irqdomain_cfg.type = IOAPIC_DOMAIN_INVALID; + ioapics[idx].irqdomain_cfg = *cfg; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/