Am 27.03.25 um 12:53 schrieb Fiona Ebner:
> Because of a long-standing bug in shim [0], booting will fail for
> distibutions that do not include the fix yet, like Rocky Linux 9.5
> and other CentOS-based distibutions. This is cased by the addition
> of the EFI_MEMORY_ATTRIBUTE_PROTOCOL in edk2 commit efaa102d00
> ("UefiCpuPkg: Produce EFI memory attributes protocol") for x86_64.
>
> Even with the fix in shim, issues in commonly shipped versions of GRUB
> remain [1].
>
> This is relatively recent, i.e. in the edk2-stable202502 tag, and
> since current non-minor distributions are still affected, revert the
> problematic commit for now.
>
> Once issues are less common in distributions, an option to support
> disabling it (via fw_cfg on the QEMU command line) can still be added
> [1]. Then, it can also be nicely documented as a known issue while
> giving users guidance.
>
> There already is a similar patch for ARM [2] inherited from the Debian
> upstream version.
>
> The problematic commit is EFI_MEMORY_ATTRIBUTE_PROTOCOL was added for x86_64
> recently in the
> edk2-stable202502 tag. Since current non-minor distributions are still
> affected, a revert is done for now.
>
> [0]:
> https://github.com/rhboot/shim/commit/c7b305152802c8db688605654f75e1195def9fd6
> [1]: https://github.com/tianocore/edk2/pull/10667
> [2]:
> ./debian/patches/ArmVirtPkg-disable-the-EFI_MEMORY_ATTRIBUTE-protocol.patch
>
> Signed-off-by: Fiona Ebner <f.eb...@proxmox.com>
> ---
> ...g-Produce-EFI-memory-attributes-prot.patch | 368 ++++++++++++++++++
> debian/patches/series | 1 +
> 2 files changed, 369 insertions(+)
> create mode 100644
> debian/patches/Revert-UefiCpuPkg-Produce-EFI-memory-attributes-prot.patch
>
>
applied, re-exported the revert using git format-patch as the unusual
DOS line-endings that EDK2 source code uses seem to got lost somewhere
along the way, and while I could have used quilt I figured there's no
harm with format-patch, thanks!
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