>>> On 09.09.15 at 11:37, <ian.campb...@citrix.com> wrote: > I'm not 100% what is going on, but if this (executable code on stack) is > happening in grub is there something which is explicitly forbidden to UEFI > apps by the UEFI spec?
Whether it's spelled out explicitly I don't know, but the separation of memory types (*Code vs *Data) is clearly with the intention to limit permissions. Hence an entity allocating *Data should not place code there (as much as an entity allocating *Code shouldn't expect to be able to write to that area, which kind of implies that such allocations aren't useful from outside of UEFI, since then you have no way to fill in the code you mean to execute). > Or is it happening within UEFI itself based on a call from grub.efi? That's still unclear at this point. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
