Thread (27 messages) 27 messages, 4 authors, 2013-08-27

[PATCH 06/10] KVM: PPC: enable IOMMU_API for KVM_BOOK3S_64 permanently

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From: Alexey Kardashevskiy <hidden>
Date: 2013-08-01 04:45:26
Also in: kvm, lkml
Subsystem: kernel virtual machine for powerpc (kvm/powerpc), linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Linus Torvalds

Revision v7 (5 revisions archived).

Revisions (5)
  1. v1
  2. v4 [diff against previous]
  3. v5 [diff against previous]
  4. v6 [diff against previous]
  5. v7 current [diff against previous]
It does not make much sense to have KVM in book3s-64bit and
not to have IOMMU bits for PCI pass through support as it costs little
and allows VFIO to function on book3s-kvm.

Having IOMMU_API always enabled makes it unnecessary to have a lot of
"#ifdef IOMMU_API" in arch/powerpc/kvm/book3s_64_vio*. With those
ifdef's we could have only user space emulated devices accelerated
(but not VFIO) which do not seem to be very useful.

Signed-off-by: Alexey Kardashevskiy <redacted>
---
 arch/powerpc/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index c55c538..3b2b761 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -59,6 +59,7 @@ config KVM_BOOK3S_64
 	depends on PPC_BOOK3S_64
 	select KVM_BOOK3S_64_HANDLER
 	select KVM
+	select SPAPR_TCE_IOMMU
 	---help---
 	  Support running unmodified book3s_64 and book3s_32 guest kernels
 	  in virtual machines on book3s_64 host processors.
-- 
1.8.3.2
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