Re: [PATCH 10/39] x86/entry/32: Handle Entry from Kernel-Mode on Entry-Stack

[Joerg Roedel]

On Tue, Jul 17, 2018 at 01:06:11PM -0700, Andy Lutomirski wrote:
> Yes, we obviously need to restore the correct cr3.  But I really don't
> like the code that rewrites the stack frame that we're about to IRET
> to, especially when it doesn't seem to serve a purpose.  I'd much
> rather the code just get its CR3 right and do the IRET and trust that
> the frame it's returning to is still there.

Okay, I'll give it a try and if it works without the copying we can put
that on-top of this patch-set. This also has the benefit that we can
revert it later if it causes problems down the road.


Regards,

	Joerg