KVM: Clean up unloved invlpg emulation
invlpg shouldn't fetch the "src" address, since it may not be valid, however SVM's "solution" which neuters emulation of all group 7 instruction is horrible and breaks kvm-lite. The simplest fix is to put a special check in for invlpg. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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