KVM: selftests: Add test for KVM_SET_USER_MEMORY_REGION
Add a KVM selftest to test moving the base gfn of a userspace memory region. Although the basic concept of moving memory regions is not x86 specific, the assumptions regarding large pages and MMIO shenanigans used to verify the correctness make this x86_64 only for the time being. Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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