Alexey Kardashevskiy 12fd285358 spapr_iommu: Disable in-kernel IOMMU tables for >4GB windows
The existing KVM_CREATE_SPAPR_TCE ioctl only support 4G windows max as
the window size parameter to the kernel ioctl() is 32-bit so
there's no way of expressing a TCE window > 4GB.

We are going to add huge DMA windows support so this will create small
window and unexpectedly fail later.

This disables KVM_CREATE_SPAPR_TCE for windows bigger that 4GB.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
2015-06-03 23:56:50 +02:00
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Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
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QEMU With E2K User Support
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