On 02/23/2018 09:58 AM, Konrad Rzeszutek Wilk wrote: >> We also need to clear the RSB on vmexit, as documented. And if we >> really want 100% support for retpoline on SKL+ instead of saying "use >> IBRS if you're paranoid", then there are a few more cases where we need >> to stuff it to avoid underflow (which is the same operation, but Arjan >> insists we should differentiate the two, which is reasonable enough). > Are these cases documented somewhere along with what approaches are taken?
Some of them are documented here: https://goo.gl/pXbvBE
