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

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Submitter Alexey Kardashevskiy
Date Aug. 1, 2013, 4:44 a.m.
Message ID <1375332272-22176-7-git-send-email-aik@ozlabs.ru>
Download mbox | patch
Permalink /patch/263898/
State New
Headers show

Comments

Alexey Kardashevskiy - Aug. 1, 2013, 4:44 a.m.
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 <aik@ozlabs.ru>
---
 arch/powerpc/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Patch

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.