Re: [edk2-devel] [PATCH 1/1] OvmfPkg/ResetVector: send post codes to qemu debug console

["Laszlo Ersek" <lersek@redhat.com>]

On 1/25/24 08:50, Gerd Hoffmann wrote:
> On Wed, Jan 24, 2024 at 05:43:29PM -0800, Erdem Aktas wrote:
>> Same for TDX, I did not run it but it should cause failure
>> as debugShowPostCode is called OvmfPkg/ResetVector/Ia32/IntelTdx.asm before
>> actually the #VE handlers are installed.
>>
>>> Had a meeting get canceled and so got a chance to test this. As I thought,
>>> this causes SEV-ES/SEV-SNP guest failures.
> 
> Hmm, I guess that pretty much kills the idea.  The first post code is
> sent before probing for TDX/SEV happens ...

Can we salvage it, but make it depend on a minimal source code tweak
(ungating)? Changing a single line for debugging (non-TDX / non-SEV-ES
guests, anyway) is much easier than coming up with this patch from zero,
whenever needed.

Can we add "DebugCon.asm" to the tree, plus a *comment* near

%include "DebugDisabled.asm"

about "DebugCon.asm"?

Thanks!
Laszlo



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