From 6c54aabd5e687092557f4881ce2d4013b971f293 Mon Sep 17 00:00:00 2001 From: Kulikov Vasiliy Date: Sat, 3 Jul 2010 12:03:51 -0400 Subject: x86/amd-iommu: Use for_each_pci_dev() Use for_each_pci_dev() to simplify the code. Signed-off-by: Kulikov Vasiliy Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 0d20286d78c6..29dd3b9f2f09 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -2609,8 +2609,7 @@ int __init amd_iommu_init_passthrough(void) pt_domain->mode |= PAGE_MODE_NONE; - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { - + for_each_pci_dev(dev) { if (!check_device(&dev->dev)) continue; -- cgit v1.2.3 From 80a506b8fdcfa868bb53eb740f928217d0966fc1 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 27 Jul 2010 17:14:24 +0200 Subject: x86/amd-iommu: Export cache-coherency capability This patch exports the capability of the AMD IOMMU to force cache coherency of DMA transactions through the IOMMU-API. This is required to disable some nasty hacks in KVM when this capability is not available. Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch') diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 29dd3b9f2f09..fa044e1e30a2 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -2572,6 +2572,11 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, static int amd_iommu_domain_has_cap(struct iommu_domain *domain, unsigned long cap) { + switch (cap) { + case IOMMU_CAP_CACHE_COHERENCY: + return 1; + } + return 0; } -- cgit v1.2.3