Re: [edk2-devel] [PATCH] ArmVirtPkg: Allow EFI memory attributes protocol to be disabled

["Marcin Juszkiewicz" <marcin.juszkiewicz@linaro.org>]

W dniu 4.12.2023 o 13:58, Ard Biesheuvel pisze:
> On Mon, 4 Dec 2023 at 13:38, Alexander Graf <graf@amazon.com> wrote:
>> On 04.12.23 13:20, Gerd Hoffmann wrote:

> I don't think it helps to go off on a tangent about why shim exists
> and why it is so terrible, as I don't think there is actually any
> disagreement about that. But now that we are, let me add my 2c as well
> :-)
> 
> For the patch under discussion here, I think that Gerd's suggestion is
> to have both a PCD and a QEMU variable, and use the PCD unless the
> variable has a value. I'm on the fence here: I would like to
> accommodate users, but adding another control that the distros are
> just going to set and forget is just going to make the mess bigger.
> 
> What is even worse: arm64 system firmware will have to deal with this
> as well, and disable the protocol in order to run distro installers.
> And once the tightened MS requirements for NX compat come into effect,
> they will have to add another workaround for this as well, and so
> we'll probably end up with generations of arm64 hardware with a
> 'enable memory attributes protocol' option in their BIOS menus. And
> guess what the default setting is likely to be?
> 
> I am quite disappointed with the complete lack of involvement from the
> folks who develop and deploy shim, and instead, third parties (and
> users) are the ones chasing me and people like Gerd (who work on QEMU
> or EDK2 rather than shim) to clean up the mess.

I use 'sbsa-ref' with QEMU and upstream EDK2. And cannot use either RHEL 
9.3 nor CentOS Stream 9 installers because they hang.

And this is not the only platform where upstream EDK2 is used.

Sure, I can hack something, use Grub from Debian or Fedora and get 
things working but that's not solution.

Adding flags in 'Broken OS support' section of EDK2 settings feels like 
bad idea. Especially when EFI app generating issues is developed by 
company known for FOSS work.



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