I was out of the country for half of the year for business (foreign earned income rules). During that time, I rented my primary residence to a person well below the FMV (not a relative or family member). Is schedule E only for 2nd homes? Where do I record the income for rental of my primary home even though it would be counted as 'personal use' because it was below market value?

Or do I enter it all on schedule E including my insurance, mortgage interest, etc?