How will a Korean-look aliked Malaysian treated in Seoul, S.Korea?

I hope a Korean could answer this.I'm from Malaysia. I have white fair skin and eyes like chinese but double eyelid. (Mixed blood of Chinese-Malay, I often being called Korean). If I went to Korea for vacation, how will they treat me? I love Korea soooo much but I heard people say that they're racist. With my looks, will they be?