Re: [Xen-devel] PAE xen + linux kernel boots ...

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 30 Apr 2005, at 10:51, Scott Parish wrote:

> Switch to xen, which is going to emulate some instructions and fake
> the writing. We eventually end up in ptwr_emulated_update(), who among
> other things, tries to copy the full l1_pgentry_t (64bits), but from
> the 4 byte offset, that is the 4 high bytes and then 4 bytes of
> undefined memory that may even be in another page.
There's code in the 32-bit ptwr_emulated_update() to turn a sub-pte 
access into a full-pte access. Either this is missing/broken in the 
64-bit version, or the emulator is broken and passing the wrong operand 
size.
 -- Keir


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