powerpc 8541 ,kernel 2.6.21.7 In misc_32.s, when executed "rif " instruction , the kernel went wrong because of the invalid instruction address. So , I changed r4 into virtual address(not physical address), this programm can go on , however , there seemed to be some kernel overflow oops in page copying process in misc_32.s, causing kernel 's termination. here are my steps,(r4 is physical address) # kexec -l uImage --devtree=your.fdt.dtb --devtree_addr=0x800000 Image Name: Linux-2.6.21.7 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1190265 Bytes = Load Address: 00000000 Entry Point: 00000000 # kexec -e Starting new kernel virtual address: cfc09000 physical address: fc09000 calling function: reboot_code(page_list=0xfc08002, reboot_code_buffer_phys=0xfc09000, image ->start=0x0,image->segment[1].mem=0x800000) Unable to handle kernel paging request for instruction fetch Faulting instruction address: 0x0fc09028 Please help. thank you very much. regards, -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.infradead.org/pipermail/kexec/attachments/20090622/e4ecc737/attachment.html>
