On Fri, 24 Nov 2017, Ingo Molnar wrote: > From: Andy Lutomirski <[email protected]> > > By itself, this is useless. It gives us the ability to run some final > code before exit that cannnot run on the kernel stack. This could > include a CR3 switch a la KAISER or some kernel stack erasing, for > example. (Or even weird things like *changing* which kernel stack > gets used as an ASLR-strengthening mechanism.) > > The SYSRET32 path is not covered yet. It could be in the future or > we could just ignore it and force the slow path if needed. > > Signed-off-by: Andy Lutomirski <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
