[Xen-devel] Re: invalid PTE for xen_start-info ?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 4/10/06 16:06, "Rik van Riel" <riel@xxxxxxxxxx> wrote:

>> You should use pte_pfn(), or pte_mfn(), or (pte_val() & PHYSICAL_PAGE_MASK)
>> for isolating the address part of a pte. If there is *any* Linux code that
>> is accessing addresses from pte contents via other methods then please do
>> let us know! But I suspect this won't be the case, due to the existing need
>> to mask off PAGE_NX.
> 
> Does that break compatibility between the hypervisor and
> older guests?

Assuming they ignore high-order software flags, no. I believe that's true
for Linux and Solaris. I don't think there are any other x86/64 PV guest
Oses.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel