[fedora-virt] Re: [PATCH] xen: do not set NX bit when making initial pagetables readonly

[Jeremy Fitzhardinge]

Ian Campbell wrote:
> __supported_pte_mask has not been correctly configured at this point
> and Xen prevents us from using the NX bit if the hardware does not
> support it. Some BIOSes seem to offer the option to disable NX.
>   
Could we sniff EFER and update __supported_pte_mask accordingly?

    J