US Patent 9880871 Protection from guest interrupts in a virtual machine function

An example method for secure virtual machine access to a protected virtual machine function includes storing a first virtual machine function instruction, which is executable to configure access privileges of a guest according to a trampoline view, as a last instruction on a first trampoline page. The method also includes storing a clear interrupt flag instruction as a first instruction on a second trampoline page. The method further includes storing a second virtual machine function instruction, which is executable to configure access privileges of the guest according to a protected view, as a last instruction on the second trampoline page. The method also includes in response to detecting an extended page fault violation while the trampoline view is active, clearing the interrupt flag of the guest and entering execution on an instruction following the clear interrupt flag instruction on the second trampoline page.