>>> On 12.09.17 at 14:14, <[email protected]> wrote: > The grant ABI uses 64 bit values, and allows a PV guest to specify linear > addresses. There is nothing interesting a 32bit PV guest can reference which > will pass an __addr_ok() check, but it should still get an error for trying.
While I'm all for tightening checks, I'm not sure we reasonably can: Existing guests may (perhaps inadvertently) rely on this behavior, and hence may break with the change. I think a prereq to this is to have a command line option (or even a per-guest one) to control strict vs relaxed argument checking behavior, and tie the extra checks to that option being true. Jan _______________________________________________ Xen-devel mailing list [email protected] https://lists.xen.org/xen-devel
