pbkit halts with Chihiro kernel

[GXTX]

Likely a side effect of #549

[GXTX]

My eyes were drawn towards

    pb_GpuInstMem=(DWORD)MmClaimGpuInstanceMemory(0xFFFFFFFF,&baseaddr);
        //returns 0x83FF0000            //0x10000
        //physical_memory(0x83FF0000)=0x03FF0000

Running this with Chihiro kernel produces

pb_GpuInstMem: 88000000
baseaddr: 00000000