I know this thread is a few days old but I thought it might be helpful to share how I figure out what's burning oil...
Turbo- usually if the turbo is the cause of the smoke it might do it a little at idle but it will smoke a lot more under boost (most of the time) so warm it up and go give it a little juice and watch your mirror
Rings- the old oil take the oil cap off and rev it trick works usually... Look for smoke coming out there or another way to check is in neutral slowly bring the Rpms up (without getting into boost at all) and bring it up to 4k for a second and look at the exhaust... If it's smoking bad then it's probably rings
Note: compression tests can't mean your rings are good, there are oil rings that can be bad and not affect the compression... Leak down test can help determine this though
PCV- usually I just take the PCV valve off and blow through both sides... It should seal on way and flow freely the other without any sticking or binding inside
Valve seals- (no one said this yet?) valve seals suck oil under vaccuum... I like to get up to 60-65 and downshift to third, then downshift to second, then downshift to first.... This will put you at maximum vaccuum and it should smoke quite a bit... Sometimes when you get to the stop and go to take off again...
Headgasket- check for oil in the coolant or coolant in your oil
One last thing... I noticed you didn't directly type that it was coming out if the tailpipe... My buddy had a car the had a small valve cover gasket leak that ran down onto the exhaust pipes and would only smoke if you were really getting on it because the downpipe would get hot enough to burn the oil and we saw smoke in the mirrors and thought it was the turbo when it was a tiny simple oil leak... Luckily he found it before going through the expense and hassle of putting another turbo on.
This isn't a bible... Just how I check for oil burning in any boosted car that I own or test drive.