Place potatoes in a large saucepan, and cover with water; bring to a boil over high heat. Reduce heat to a simmer, and cook until tender, 20 to 25 minutes.
Drain potatoes and return to saucepan. Using the back of a large spoon, smash potatoes; stir in olive oil and salt. Transfer to a serving bowl, and sprinkle with parsley and chives; serve immediately.