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-rw-r--r--arch/x86/Kconfig4
-rw-r--r--arch/x86/kernel/amd_iommu.c7
2 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 748e50a1a15..3f27e5c0c9c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1837,8 +1837,8 @@ config PCI_MMCONFIG
config DMAR
bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
- depends on X86_64 && PCI_MSI && ACPI && EXPERIMENTAL
- ---help---
+ depends on PCI_MSI && ACPI && EXPERIMENTAL
+ help
DMA remapping (DMAR) devices support enables independent address
translations for Direct Memory Access (DMA) from devices.
These DMA remapping devices are reported via ACPI tables
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index c5962fe3796..a97db99dad5 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1928,6 +1928,12 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
return paddr;
}
+static int amd_iommu_domain_has_cap(struct iommu_domain *domain,
+ unsigned long cap)
+{
+ return 0;
+}
+
static struct iommu_ops amd_iommu_ops = {
.domain_init = amd_iommu_domain_init,
.domain_destroy = amd_iommu_domain_destroy,
@@ -1936,5 +1942,6 @@ static struct iommu_ops amd_iommu_ops = {
.map = amd_iommu_map_range,
.unmap = amd_iommu_unmap_range,
.iova_to_phys = amd_iommu_iova_to_phys,
+ .domain_has_cap = amd_iommu_domain_has_cap,
};