[Tails-dev] Please review'n'merge feature/amd64-kernel (#545…

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Autor: intrigeri
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A: tails-dev
Assumptes nous: Re: [Tails-dev] Please review'n'merge feature/amd64-kernel (#5456), Re: [Tails-dev] Please review'n'merge feature/amd64-kernel (#5456), [Tails-dev] NX bit [was: Please review'n'merge feature/amd64-kernel (#5456)]
Assumpte: [Tails-dev] Please review'n'merge feature/amd64-kernel (#5456)
Hi,

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.

Candidate for 0.23, please review'n'merge into devel.

Assigned to anonym, who's going to be the RM for 0.23, but it would be
really great if other people did test builds from experimental on
various hardware to ensure it works fine (modulo the broken memory
erasure on shutdown, but that's another story, thanks in advance for
not reporting this again and again).

Cheers,
--
intrigeri
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