KVM: SVM: remove unused field from struct vcpu_svm
The pointer to svm_cpu_data in struct vcpu_svm looks interesting from the point of view of accessing it after vmexit, when the GSBASE is still containing the guest value. However, despite existing since the very first commit of drivers/kvm/svm.c (commit 6aa8b732, "[PATCH] kvm: userspace interface", 2006-12-10), it was never set to anything. Ignore the opportunity to fix a 16 year old "bug" and delete it; doing things the "harder" way makes it possible to remove more old cruft. Reviewed-by: NSean Christopherson <seanjc@google.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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