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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-06-27 07:37:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-06-27 07:37:51 -0700 |
| commit | e6d133618836f317f5a2be657f768e56552b9419 (patch) | |
| tree | a08f0ef9fbcab6c33c7c85e58a0012e9119d2ff1 | |
| parent | 7f607455c3b91fec267c48a4177526cbb5e501f4 (diff) | |
| parent | 2d9e667efdfb4e986074d98e7d9a424003c7c43b (diff) | |
| download | linux-3.10-e6d133618836f317f5a2be657f768e56552b9419.tar.gz linux-3.10-e6d133618836f317f5a2be657f768e56552b9419.tar.bz2 linux-3.10-e6d133618836f317f5a2be657f768e56552b9419.zip | |
Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6:
intel-iommu: Force-disable IOMMU for iGFX on broken Cantiga revisions.
intel-iommu: Fix double lock in get_domain_for_dev()
intel-iommu: Fix reference by physical address in intel_iommu_attach_device()
| -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 796828fce34..c9171be7456 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); |