Messages in this thread | | | Subject | Re: [RFC PATCH] PCI: remove access to pci_[enable|disable]_msi() for drivers - take 2 | From | Roland Dreier <> | Date | Wed, 08 Jun 2005 08:52:26 -0700 |
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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
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