[PATCH][RFC] x86_64: Reload CS when startup_64 is used.

[ebiederm at xmission.com (Eric W. Biederman)]

Andi Kleen <ak at suse.de> writes:

>> I'm not certain I caught everything but as far as I know I did.
>> Part of that was by having the code run at a fixed virtual address so
>> we still live in the last 2GB of the virtual address space.
>
> You changed the -2GB (or rather -40MB unpatched) mapping to not necessarily 
> be linear?

I left it linear but I removed assumptions about which physical address it
goes to.

>  There are a couple of assumptions that it is, including at boot up
> (it doubles as the 1:1 mapping then) and in change_page_attr() and in
> suspend/resume.

Yes.  Those all sound familiar.

I removed the doubling as the 1:1 physical mapping.

Eric