++ disc...@edk2.groups.io On 1/8/2024 5:11 PM, Nhi Pham wrote: > Hi Ard, all, > > Could you please help explain how the depex section in an image is > mapped in terms of memory attribute? > > As my observation, dispatcher locates[1] the depex section inside the > module image and write[2] an evaluated data to the depex if necessary > for scheduled boot order. The problem that the depex section is now in > RO+X memory due to a part of the module image, so a writing to depex > would cause data abort. I'm unsure whether this issue is generic in EDK2 > or not. > > I think of two approaches: > > #1 Relocate the depex section to heap memory for dependency evaluation? > > #2 EDK2 build tool to support granting write permission for depex section. > > [1] StandaloneMmPkg/Core/FwVol.c:236 > [2] StandaloneMmPkg/Core/Dependency.c:256 > > Thanks, > Nhi
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