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00dfff77e7
linux/drivers/pci
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Jiri Slaby 00dfff77e7 intel-iommu: Fix double lock in get_domain_for_dev() 
stanse found the following double lock.

In get_domain_for_dev:
  spin_lock_irqsave(&device_domain_lock, flags);
  domain_exit(domain);
    domain_remove_dev_info(domain);
      spin_lock_irqsave(&device_domain_lock, flags);
      spin_unlock_irqrestore(&device_domain_lock, flags);
  spin_unlock_irqrestore(&device_domain_lock, flags);

This happens when the domain is created by another CPU at the same time 
as this function is creating one, and the other CPU wins the race to 
attach it to the device in question, so we have to destroy our own 
newly-created one.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-06-15 10:50:46 +01:00
..
hotplug PCI: hotplug/cpqphp, fix NULL dereference 2010-06-11 13:10:21 -07:00
pcie Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-05-28 14:42:18 -07:00
.gitignore
access.c PCI: output FW warning in pci_read/write_vpd 2010-05-18 15:00:25 -07:00
bus.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dmar.c Merge git://git.infradead.org/iommu-2.6 2010-05-21 17:25:01 -07:00
hotplug-pci.c
hotplug.c
htirq.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
intel-iommu.c intel-iommu: Fix double lock in get_domain_for_dev() 2010-06-15 10:50:46 +01:00
intr_remapping.c Merge git://git.infradead.org/iommu-2.6 2010-05-21 17:25:01 -07:00
intr_remapping.h intr-remap: generic support for remapping HPET MSIs 2009-08-27 23:33:20 +02:00
ioapic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
iov.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
iova.c intel-iommu: Remove superfluous iova_alloc_lock from IOVA code 2009-07-15 08:17:02 +01:00
irq.c PCI: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-07 11:12:23 -08:00
Kconfig PCI: change PCI_MSI help text to recommend enabling 2010-05-11 12:01:10 -07:00
Makefile microblaze: Enable PCI, missing files 2010-03-11 14:04:27 +01:00
msi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
msi.h PCI MSI: shorten PCI_MSIX_ENTRY_* symbol names 2009-06-29 12:15:19 -07:00
pci-acpi.c Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2010-03-01 10:36:22 -08:00
pci-driver.c PCI PM: Run-time callbacks for PCI bus type 2010-02-22 16:21:19 -08:00
pci-stub.c PCI: pci-stub: add pci_stub.ids parameter 2009-09-09 13:44:34 -07:00
pci-sysfs.c Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/" 2010-06-11 13:08:37 -07:00
pci.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-05-21 18:58:52 -07:00
pci.h PCI: make bitfield unsigned 2010-05-11 10:07:20 +02:00
probe.c ACPI, APEI, PCIE AER, use general HEST table parsing in AER firmware_first setup 2010-05-19 22:40:14 -04:00
proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
quirks.c ahci: add pci quirk for JMB362 2010-06-07 16:03:10 -04:00
remove.c PCI: eliminate redundant pci_stop_dev() call from pci_destroy_dev() 2009-06-11 12:04:19 -07:00
rom.c PCI: fix rom.c kernel-doc warning 2009-02-13 12:01:56 -08:00
search.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
setup-bus.c Revert "PCI: update bridge resources to get more big ranges in PCI assign unssigned" 2010-05-12 18:39:45 -07:00
setup-irq.c PCI: use dev_printk when possible 2008-06-25 16:05:13 -07:00
setup-res.c PCI: change resource collision messages from KERN_ERR to KERN_INFO 2010-06-11 13:08:14 -07:00
slot.c Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/" 2010-06-11 13:08:37 -07:00
syscall.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
vpd.c pci: Add helper to search for VPD keywords 2010-02-28 00:43:33 -08:00