* How to determine if I am running under Xen?
@ 2007-09-21 4:04 James Harper
2007-09-21 4:30 ` Chris Lalancette
2007-09-21 6:23 ` Ian Campbell
0 siblings, 2 replies; 3+ messages in thread
From: James Harper @ 2007-09-21 4:04 UTC (permalink / raw)
To: xen-devel
Does anyone have a code snippet that I could use (in kernel space) to
determine if I am running under Xen or not in a HVM domain?
Thanks
James
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to determine if I am running under Xen?
2007-09-21 4:04 How to determine if I am running under Xen? James Harper
@ 2007-09-21 4:30 ` Chris Lalancette
2007-09-21 6:23 ` Ian Campbell
1 sibling, 0 replies; 3+ messages in thread
From: Chris Lalancette @ 2007-09-21 4:30 UTC (permalink / raw)
To: James Harper; +Cc: xen-devel
James Harper wrote:
> Does anyone have a code snippet that I could use (in kernel space) to
> determine if I am running under Xen or not in a HVM domain?
>
> Thanks
>
> James
I don't have a code snippet....but a script I saw around here basically
did "cat /proc/acpi/dsdt | grep xen" to determine whether they were on
an HVM domain or not. You can probably pretty easily call the same
functions that generate the dsdt from the kernel to determine the
information.
Chris Lalancette
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to determine if I am running under Xen?
2007-09-21 4:04 How to determine if I am running under Xen? James Harper
2007-09-21 4:30 ` Chris Lalancette
@ 2007-09-21 6:23 ` Ian Campbell
1 sibling, 0 replies; 3+ messages in thread
From: Ian Campbell @ 2007-09-21 6:23 UTC (permalink / raw)
To: James Harper; +Cc: xen-devel
On Fri, 2007-09-21 at 14:04 +1000, James Harper wrote:
> Does anyone have a code snippet that I could use (in kernel space) to
> determine if I am running under Xen or not in a HVM domain?
"cpuid eax=0x40000000" will return XenVMMXenVMM in (ebx,ecx,edx) or you
could just look for the Xen PCI device -- see unmodified_drivers in the
xen source for examples of both.
Ian.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-09-21 4:04 How to determine if I am running under Xen? James Harper
2007-09-21 4:30 ` Chris Lalancette
2007-09-21 6:23 ` Ian Campbell
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