Unmap a qvm process address space range that mapped a guest-physical address range
#include <qvm/gasp.h>
void gasp_unmap(struct guest_system *gsp, const void *ptr, size_t length, int const flush)
Use this function to unmap host-physical to guest-physical address mappings you made with gasp_map_contig(), gasp_map_sys(), or gasp_map_vdma().