KVM: PPC: Add support for 64bit TCE windows

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The existing KVM_CREATE_SPAPR_TCE only supports 32bit windows which is not
enough for directly mapped windows as the guest can get more than 4GB.

This adds KVM_CREATE_SPAPR_TCE_64 ioctl and advertises it
via KVM_CAP_SPAPR_TCE_64 capability. The table size is checked against
the locked memory limit.

Since 64bit windows are to support Dynamic DMA windows (DDW), let's add
@bus_offset and @page_shift which are also required by DDW.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Alexey Kardashevskiy 2016-03-01 17:54:40 +11:00 • committed by Paul Mackerras

parent 14f853f1b2

commit 58ded4201f

6 changed files with 75 additions and 5 deletions

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include/uapi/linux/kvm.h

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