From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261331AbVFHPzT (ORCPT ); Wed, 8 Jun 2005 11:55:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261328AbVFHPyI (ORCPT ); Wed, 8 Jun 2005 11:54:08 -0400 Received: from webmail.topspin.com ([12.162.17.3]:25947 "EHLO exch-1.topspincom.com") by vger.kernel.org with ESMTP id S261331AbVFHPw1 (ORCPT ); Wed, 8 Jun 2005 11:52:27 -0400 To: Andi Kleen Cc: Grant Grundler , Greg KH , Jeff Garzik , "David S. Miller" , tom.l.nguyen@intel.com, linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH] PCI: remove access to pci_[enable|disable]_msi() for drivers - take 2 X-Message-Flag: Warning: May contain useful information References: <20050607002045.GA12849@suse.de> <20050607202129.GB18039@kroah.com> <20050608050212.GD21060@colo.lackof.org> <20050608133226.GR23831@wotan.suse.de> From: Roland Dreier Date: Wed, 08 Jun 2005 08:52:26 -0700 In-Reply-To: <20050608133226.GR23831@wotan.suse.de> (Andi Kleen's message of "Wed, 8 Jun 2005 15:32:26 +0200") Message-ID: <52oeagethh.fsf@topspin.com> User-Agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Jumbo Shrimp, linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 08 Jun 2005 15:52:26.0644 (UTC) FILETIME=[1174DD40:01C56C42] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andi> x86-64 will eventually too, I definitely plan for it at some Andi> point. We need it for very big machines where 255 interrupt Andi> vectors are not enough. And as you say with MSI-X it becomes Andi> even more important. MSI-X already works fine on x86-64. For example, on the machine I'm sending this from, an Athlon64 system with Nforce 4 (and yes I am using IP-over-InfiniBand as the only network connection on my workstation): $ arch x86_64 $ cat /proc/interrupts CPU0 0: 1340159746 IO-APIC-edge timer 7: 2 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 15: 13333990 IO-APIC-edge ide1 50: 3 PCI-MSI-X ib_mthca (async) 58: 480844 PCI-MSI-X ib_mthca (cmd) 177: 7975072 IO-APIC-level libata, NVidia CK804 185: 2093654 IO-APIC-level libata 193: 14304257 IO-APIC-level nvidia 201: 769996 IO-APIC-level ohci_hcd 209: 2 IO-APIC-level ehci_hcd 217: 3 IO-APIC-level ohci1394 233: 37917879 PCI-MSI-X ib_mthca (comp) NMI: 148617 LOC: 1340049308 ERR: 0 MIS: 0 $ lspci 0000:00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3) 0000:00:01.0 ISA bridge: nVidia Corporation: Unknown device 0050 (rev a3) 0000:00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2) 0000:00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2) 0000:00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3) 0000:00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2) 0000:00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev a2) 0000:00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev a3) 0000:00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev a3) 0000:00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2) 0000:00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3) 0000:00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 0000:00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 0000:00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 0000:00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 0000:01:00.0 VGA compatible controller: nVidia Corporation: Unknown device 0140 (rev a2) 0000:03:00.0 InfiniBand: Mellanox Technologies MT25208 InfiniHost III Ex (rev a0) 0000:05:0b.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) 0000:05:0c.0 Ethernet controller: Marvell Technology Group Ltd. Gigabit Ethernet Controller (rev 13) $ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 31 model name : AMD Athlon(tm) 64 Processor 3500+ stepping : 0 cpu MHz : 1005.169 cache size : 512 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 pni syscall nx mmxext fxsr_opt lm 3dnowext 3dnow lahf_lm bogomips : 1988.42 TLB size : 1088 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp