Hi, On Sat, 21 Dec 2013 18:02:54 +0100 intrigeri <[email protected]> wrote: > shipping a 64-bit kernel is a pre-requisite for UEFI support, as many > (if not all) 64-bit EFI firmwares don't support booting a 32-bit > kernel, and we won't be supporting any (rare, and mostly obsolete) > 32-bit UEFI hardware. > > The feature/amd64-kernel branch implements this: it replaces our good > old 686-pae kernel with a 64-bit one, and adjusts various pieces of > documentation and the test suite (I've not tested this part yet, still > lacking a suitable setup) accordingly. > > Note that the code bits of this branch have been in experimental for > many weeks now. > > Drawback: possibly some UX degradation inside VirtualBox, see ticket. > But the VirtualBox guest modules have been broken since March, and > anyway it seems obvious to me that if we had to choose between > supporting running Tails as a guest inside VirtualBox, or running it > on UEFI hardware, we would choose the latter. > If I'm not mistaken, this will remove NX bit protection on 32 bits only CPUs supporting PAE and NX. Such hardware include, as far as I understand: Intel Pentium 4 "prescott" and later, Intel Pentium M "dothan" and later, Intel Core (not 2) Solo and Duo, 32 bits Intel Atom, Via C7. This is not the most common hardware currently, but I think it should however be thought, if it was not already.
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