On Fri, Aug 19, 2022 at 01:38:27PM +0200, Ben Hutchings wrote: > So that puts the whole __FILL_RETURN_BUFFER inside an alternative, and > we can't have nested alternatives. That's unfortunate. Well, both alternatives end with the LFENCE instruction, so I could pull it out and do two consequtive ALTs, but unrolling the loop for i386 is a better solution in that the sequence, while larger, removes the need for the LFENCE.
