Re: [Xen-devel] Modify cr0 at dom0

[machi1271 <machi1271@xxxxxxxxx>]

I modified the memory area by vmap the protected physical page to another writable virtual address region.

 

So, solved~~

 

---

machi1271

 

From: Razvan Cojocaru

Date: 2014-10-17 16:01

To: machi1271; xen-devel

Subject: Re: [Xen-devel] Modify cr0 at dom0

On 10/17/2014 10:14 AM, machi1271 wrote:

> I'v tried the way to modify CR0 by writing to it directly. But I got the

> following error:

> 

>         (XEN) traps.c:1768:d0 _Attempt to change unmodifiable CR0 flags.

 

I think you're only allowed to modify _some_ CR0 flags by Xen (CR0.TS

and maybe others). You'd have to look at the Xen source code to see

which ones.

 

Hope that helps, maybe someone with more experience doing what you need

to do can chime in.

 

 

Razvan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel