Re: [PATCH v9 0/4] efi: Unified Xen hypervisor/kernel/initrd images

[Trammell Hudson <hudson@trmm.net>]

Any further thoughts on this patch series? Three out of four of
them have been reviewed or acked by at least one reviewer, with
only the last one currently unreviewed.

--
Trammell

On Friday, October 2, 2020 1:18 PM, Trammell Hudson <hudson@trmm.net> wrote:
> This patch series adds support for bundling the xen.efi hypervisor,
> the xen.cfg configuration file, the Linux kernel and initrd, as well
> as the XSM, and architectural specific files into a single "unified"
> EFI executable. This allows an administrator to update the components
> independently without requiring rebuilding xen, as well as to replace
> the components in an existing image.
>
> The resulting EFI executable can be invoked directly from the UEFI Boot
> Manager, removing the need to use a separate loader like grub as well
> as removing dependencies on local filesystem access. And since it is
> a single file, it can be signed and validated by UEFI Secure Boot without
> requring the shim protocol.
>
> It is inspired by systemd-boot's unified kernel technique and borrows the
> function to locate PE sections from systemd's LGPL'ed code. During EFI
> boot, Xen looks at its own loaded image to locate the PE sections for
> the Xen configuration (`.config`), dom0 kernel (`.kernel`), dom0 initrd
> (`.ramdisk`), and XSM config (`.xsm`), which are included after building
> xen.efi using objcopy to add named sections for each input file.
>
> Trammell Hudson (4):
> efi/boot.c: add file.need_to_free
> efi/boot.c: add handle_file_info()
> efi: Enable booting unified hypervisor/kernel/initrd images
> efi: Do not use command line if unified config is included
>
> .gitignore | 1 +
> docs/misc/efi.pandoc | 49 ++++++++++++
> xen/arch/arm/efi/efi-boot.h | 36 ++++++---
> xen/arch/x86/efi/Makefile | 2 +-
> xen/arch/x86/efi/efi-boot.h | 13 ++-
> xen/common/efi/boot.c | 140 ++++++++++++++++++++++++---------
> xen/common/efi/efi.h | 3 +
> xen/common/efi/pe.c | 152 ++++++++++++++++++++++++++++++++++++
> 8 files changed, 347 insertions(+), 49 deletions(-)
> create mode 100644 xen/common/efi/pe.c
>
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> 2.25.1