From 58ded4201ff028b15f6b317228faa5f154a0663f Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Tue, 1 Mar 2016 17:54:40 +1100 Subject: KVM: PPC: Add support for 64bit TCE windows 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 Signed-off-by: Paul Mackerras --- arch/powerpc/include/uapi/asm/kvm.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/powerpc/include/uapi') diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index ab4d4732c492..c93cf35ce379 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -333,6 +333,15 @@ struct kvm_create_spapr_tce { __u32 window_size; }; +/* for KVM_CAP_SPAPR_TCE_64 */ +struct kvm_create_spapr_tce_64 { + __u64 liobn; + __u32 page_shift; + __u32 flags; + __u64 offset; /* in pages */ + __u64 size; /* in pages */ +}; + /* for KVM_ALLOCATE_RMA */ struct kvm_allocate_rma { __u64 rma_size; -- cgit