DomU LDT emtpy

DomU LDT emtpy

[david]

Hi there,

short question: should ldt_base in struct vcpu_guest_context_t contain
the value of the LDTR of the current running process in DomU? It's
always zero :(

I'm trying to get the value by using libxc:
vcpu_guest_context_any_t *ctxt = malloc(sizeof(vcpu_guest_context_any_t));
xc_vcpu_getcontext(xcinterface, domain, 0, ctxt);
ctxt->c.ldt_base;


have you any idea how I can get the LDTR value from DomU in Dom0 by
using libxc?

thanks,
david

Re: DomU LDT emtpy

[david]

Ok, i think I know what the problem is: LDT is 0 :) (winxp sp2). I have
no idea why, but windbg shows me that there is just a 0 stored.

... how can the OS know the details about the segments of the running
process? .. but I think is is the wrong mailinglist for such a question.

cya,
david




On 07/01/2011 02:58 PM, david wrote:
> Hi there,
> 
> short question: should ldt_base in struct vcpu_guest_context_t contain
> the value of the LDTR of the current running process in DomU? It's
> always zero :(
> 
> I'm trying to get the value by using libxc:
> vcpu_guest_context_any_t *ctxt = malloc(sizeof(vcpu_guest_context_any_t));
> xc_vcpu_getcontext(xcinterface, domain, 0, ctxt);
> ctxt->c.ldt_base;
> 
> 
> have you any idea how I can get the LDTR value from DomU in Dom0 by
> using libxc?
> 
> thanks,
> david
> 
> 
> 
> 
> 
>