| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] Re: windows bluescreen after restore
At 07:25 -0400 on 02 May (1178090752), Guy Zana wrote:
> IRQL_NOT_LESS_OR_EQUAL happens when a kernel thread with high priority tries
> to access a virtual address which is paged to the disk (since the paging
> mechanism in windows runs in a lower priority of the thread). Most of the
> chances that this is around paging...
>
> If you can reproduce the bug and it happens any time that you do
> save/restore, I would suggest to try to tun the guest with paging disabled
> (System Properties -> Advanced -> Performace [Settings] -> Advanced ->
> Virtual Memory [Change] -> Select "No paging file") and then try to do
> save&resote.
>
> STOP 0x8E is KERNEL_MODE_EXCEPTION_NOT_HANDLED and could be a side effect...
Both of these stop codes are cause by the kernel taking a page fault
when it didn't expect one (at a higher TPR level than the PF handler, or
in non-paged memory). This is probably because either CPU state
(CR3/CR4/EFER) or memory (guest pagetables) have been corrupted by the
save/restore, so the shadow code sees garbage in the guest's pagetables
and passes a pagefault to the guest.
Tim.
--
Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, XenSource UK Limited
Registered office c/o EC2Y 5EB, UK; company number 05334508
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home