UVM_KMF_EXEC
0, UVM_KMF_WIRED | UVM_KMF_EXEC);
flags & UVM_KMF_EXEC, &rv);
vaprot = (flags & UVM_KMF_EXEC) ? UVM_PROT_ALL : UVM_PROT_RW;
if (flags & UVM_KMF_EXEC)