Re: [RFC] de-asmify the x86-64 system call slowpath
On 01/27/2014 02:46 PM, Andy Lutomirski wrote: > > I think that sysret for sigreturn is probably not very interesting. > On the other hand, sysret for #PF might be a huge win, despite being > even scarier. >
SYSRET for #PF or other exceptions is a nonstarter; register state is live at that point.