I think you need to keep the more restrictive EXPORT_SYMBOL_GPL from the 64-bit code to keep the intention of all authors intact.
- [RFC PATCH 00/10] implement KASLR for powerpc/fsl_booke/... Jason Yan
- [RFC PATCH 01/10] powerpc: unify definition of M_IF... Jason Yan
- Re: [RFC PATCH 01/10] powerpc: unify definition... Christophe Leroy
- [RFC PATCH 02/10] powerpc: move memstart_addr and k... Jason Yan
- Re: [RFC PATCH 02/10] powerpc: move memstart_ad... Christophe Leroy
- Re: [RFC PATCH 02/10] powerpc: move memstart_ad... Christoph Hellwig
- [RFC PATCH 03/10] powerpc: introduce kimage_vaddr t... Jason Yan
- Re: [RFC PATCH 03/10] powerpc: introduce kimage... Christophe Leroy
- Re: [RFC PATCH 03/10] powerpc: introduce kimage... Christoph Hellwig
- [RFC PATCH 08/10] powerpc/fsl_booke/kaslr: clear th... Jason Yan
- Re: [RFC PATCH 08/10] powerpc/fsl_booke/kaslr: ... Christophe Leroy
- [RFC PATCH 06/10] powerpc/fsl_booke/32: implement K... Jason Yan
- Re: [RFC PATCH 06/10] powerpc/fsl_booke/32: imp... Christophe Leroy
- [RFC PATCH 09/10] powerpc/fsl_booke/kaslr: support ... Jason Yan