Subject: Re: bad effect of keeping page table mapped in user space ?
To: Manuel Bouyer <>
From: Andrew Doran <>
List: tech-kern
Date: 11/27/2007 17:10:10
On Tue, Nov 27, 2007 at 12:35:46AM +0100, Manuel Bouyer wrote:

> the hypervisor switches address spaces on kernel entry/exit, and
> %cr3 never points to a user page table when in kernel, and vice-versa.

It reloads %cr3 on every syscall? Does the hypervisor provide an alternative
method that can be used?