From: Alexey Kardashevskiy <aik@xxxxxxxxx>
The IOMMU API implements groups creating/deletion, device binding
and IOMMU map/unmap operations.
The PowerPC implementation uses most of the API except map/unmap
operations, which are implemented on POWER using hypercalls.
However, in order to link a kernel with the CONFIG_IOMMU_API enabled,
the empty kvm_iommu_map_pages/kvm_iommu_unmap_pages have to be
defined, so this defines them.
Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
Cc: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Paul Mackerras <paulus@xxxxxxxxx>
---
arch/powerpc/include/asm/kvm_host.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index b6a047e..c025d91 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -603,4 +603,18 @@ struct kvm_vcpu_arch {
#define __KVM_HAVE_ARCH_WQP
+#ifdef CONFIG_IOMMU_API
+/* POWERPC does not use IOMMU API for mapping/unmapping */
+static inline int kvm_iommu_map_pages(struct kvm *kvm,
+ struct kvm_memory_slot *slot)
+{
+ return 0;
+}
+
+static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
+ struct kvm_memory_slot *slot)
+{
+}
+#endif /* CONFIG_IOMMU_API */
+
#endif /* __POWERPC_KVM_HOST_H__ */
--
1.7.10.4
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