On Fri, Feb 9, 2018 at 1:25 AM, Joerg Roedel <joro@xxxxxxxxxx> wrote: > + > + /* Copy over the stack-frame */ > + cld > + rep movsb Ugh. This is going to be horrendous. Maybe not noticeable on modern CPU's, but the whole 32-bit code is kind of pointless on a modern CPU. At least use "rep movsl". If the kernel stack isn't 4-byte aligned, you have issues. Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>