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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-21 09:22:45 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-21 09:22:45 +0100 |
| commit | 14764b01a5576ce23a9d0c95a027049206a19cef (patch) | |
| tree | fa7f4e3b9b62598076baf7d312dd37d6c91b0d56 /drivers/pci/intel-iommu.c | |
| parent | fc4978b796e5e52ab3a709495a968199afe0a108 (diff) | |
| parent | 5ccd4302a20bfe56eb72a5e27ad0be046fc820a5 (diff) | |
| download | talos-op-linux-14764b01a5576ce23a9d0c95a027049206a19cef.tar.gz talos-op-linux-14764b01a5576ce23a9d0c95a027049206a19cef.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/nico/orion into devel-stable
Diffstat (limited to 'drivers/pci/intel-iommu.c')
| -rw-r--r-- | drivers/pci/intel-iommu.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 796828fce34c..c9171be74564 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -340,7 +340,7 @@ int dmar_disabled = 0; int dmar_disabled = 1; #endif /*CONFIG_DMAR_DEFAULT_ON*/ -static int __initdata dmar_map_gfx = 1; +static int dmar_map_gfx = 1; static int dmar_forcedac; static int intel_iommu_strict; @@ -1874,14 +1874,15 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw) } } if (found) { + spin_unlock_irqrestore(&device_domain_lock, flags); free_devinfo_mem(info); domain_exit(domain); domain = found; } else { list_add(&info->link, &domain->devices); list_add(&info->global, &device_domain_list); + spin_unlock_irqrestore(&device_domain_lock, flags); } - spin_unlock_irqrestore(&device_domain_lock, flags); } found_domain: @@ -3603,7 +3604,8 @@ static int intel_iommu_attach_device(struct iommu_domain *domain, pte = dmar_domain->pgd; if (dma_pte_present(pte)) { free_pgtable_page(dmar_domain->pgd); - dmar_domain->pgd = (struct dma_pte *)dma_pte_addr(pte); + dmar_domain->pgd = (struct dma_pte *) + phys_to_virt(dma_pte_addr(pte)); } dmar_domain->agaw--; } @@ -3719,6 +3721,12 @@ static void __devinit quirk_iommu_rwbf(struct pci_dev *dev) */ printk(KERN_INFO "DMAR: Forcing write-buffer flush capability\n"); rwbf_quirk = 1; + + /* https://bugzilla.redhat.com/show_bug.cgi?id=538163 */ + if (dev->revision == 0x07) { + printk(KERN_INFO "DMAR: Disabling IOMMU for graphics on this chipset\n"); + dmar_map_gfx = 0; + } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf); |
