>
> A bit more information on this. There is a on-going discussion on the
> errno topic on xen-devel. The safe bet is that if you use errno in the
> os it is probably in the os name space. If you get errno from hypercall
> struct it should be in xen's name space.
>
> Wei.
>
I don't know what is the cause of the vmfunc error, but I'm afraid that
this is not caused by xc_altp2m_set_vcpu_enable_notify, as I can't
reproduce the error using the code below:
#include <xenctrl.h>
> #include <stdlib.h>
> int main(int argc, char *argv[]){
> domid_t domid;
> int vcpuid;
> int rc = -1;
> if (argc != 3)
> {
> printf("arguments error, please input domid vcpuid\n");
> return -1;
> }
> else
> {
> domid = atoi(argv[1]);
> vcpuid = atoi(argv[2]);
> }
>
xen_pfn_t new_gfn;
>
//increase memory reservation for guest
> rc = xc_domain_increase_reservation_exact(xci, domid, 1,
> 0, 0, &new_gfn);
> if(rc<0)
> {
> printf("fail to increase memory reservation\n");
> return -1;
> }
> printf("added memory:%ld\n",new_gfn);
>
//map the memory to guest memory space
> rc = xc_domain_populate_physmap_exact(xci, domid, 1, 0, 0, &new_gfn);
> if(rc<0)
> {
> printf("fail to map increased memory\n");
> return -1;
> }
>
//set #VE info area in VMCS
* rc = xc_altp2m_set_vcpu_enable_notify(xci, domid, vcpuid, new_gfn);*
> if(rc<0)
> {
> printf("fail to set #ve info page:%ld \n",new_gfn);
> return -1;
> }
> printf("succeed setting #ve info for page:%ld\n",new_gfn);
>
> //enable #VE in VMCS
rc = xc_altp2m_set_domain_state(xci,domid,1);
> if(rc<0)
> {
> printf("error enabing #VE\n");
> return -1;
> }
> return 0;
The code always stops at the xc_altp2m_set_vcpu_enable_notify, which is
used to assign the new page as #VE info page. As I can't debug the Xen
source code, I don't why xc_altp2m_set_vcpu_enable_notify always return -1.
Any ideas?
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
