The generalized uncertainty principle (GUP) is a natural consequence of many proposed
quantum gravity theories which further indicates the modification of the quantum mechanics and
classical mechanics. A unified classical-quantum framework also leads to the interpretation of a
Winger phase-space distribution of a state as a KvN wave function. In this article, we utilize the
classical-quantum unified framework to calculate the expression for the GUP modified Wigner
function of a classical harmonic oscillator in the configuration space instead of the conventional
approach of utilising the momentum space. Further, we plot the modified Wigner functions and
show that they are similar to what has been obtained before in the past literature.