Re: [edk2-devel] [PATCH 2/2] OvmfPkg: Search EFI_RESOURCE_MEMORY_UNACCEPTED for Fw hoblist

["Gerd Hoffmann" <kraxel@redhat.com>]

On Tue, May 31, 2022 at 10:31:17PM +0800, Min Xu wrote:
> In current TDVF implementation all unaccepted memory passed in Hoblist
> are tagged as EFI_RESOURCE_MEMORY_UNACCEPTED. They're all accepted before
> they can be accessed. After accepting memory region, the Hob ResourceType
> is unchanged (still be EFI_RESOURCE_MEMORY_UNACCEPTED).
> 
> TDVF Config-B skip PEI phase and it tries to find a memory region which
> is the largest one below 4GB. Then this memory region will be used as the
> firmware hoblist.
> 
> So we should walk thru the input hoblist and search for the memory region
> with the type of EFI_RESOURCE_MEMORY_UNACCEPTED.
> 
> Because EFI_RESOURCE_MEMORY_UNACCEPTED has not been officially in PI spec.
> So it cannot be defined in MdePkg/Include/Pi/PiHob.h. As a temporary
> solution it is defined in Hob.c.
> 
> There is a patch-set for lazy-accept very soon. In that patch-set
> EFI_RESOURCE_MEMORY_UNACCEPTED will be defined in MdeModulePkg.

Acked-by: Gerd Hoffmann <kraxel@redhat.com>

take care,
  Gerd