<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hello,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>I am relatively new to kexec, and am running into some problems with relocations when I try to use kexec to load several different X86_64 kernels. I think this is the correct list to post to, but please point me in the right direction if it isn't.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Here is some of the information on my test environment:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>$ kexec --version</DIV><DIV>kexec-tools-testing 20071030 released 30th October 2007</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>$ uname -r </DIV><DIV>2.6.21.5</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>RHEL5 Kernel:</DIV><DIV>$ file /tmp/vmlinuz </DIV><DIV>/tmp/vmlinuz: ELF 64-bit LSB shared object, AMD x86-64, version 1, stripped</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Buildroot generated kernel (bzImage) with initramfs:</DIV><DIV># file /tmp/linux-kernel-2.6.21.5-x86_64 </DIV><DIV>/tmp/linux-kernel-2.6.21.5-x86_64: Linux kernel x86 boot executable RO-rootFS, root_dev 0x801, swap_dev 0x5, Normal VGA</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Here is the output I am getting:</DIV><DIV>(note: I usually have more options, but i get same errors regardless)</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>$ kexec -l /tmp/vmlinuz </DIV><DIV>Unhandled rela relocation: 4258616</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I noticed this line in the source file, kexec/arch/x86_64/kexec-elf-rel-x86_64.c:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>die("Unhandled rela relocation: %lu\n", reloc_name(r_type));</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I figured %lu should be %s, so I changed it, and got the following output:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>$ kexec -l /tmp/vmlinuz</DIV><DIV>Unhandled rela relocation: R_X86_64_PLT32</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I noticed that it is not handled by kexec/arch/x86_64/kexec-elf-rel-x86_64.c, so figured I either am trying to kexec an incompatible kernel image or this relocation needs to be handled. I made it further by hacking in a (non-working) case for this relocation type, but then came across R_X86_64_GOTPCREL. I don't think calculating the relocation address for a PLT or a GOT relocation is trivial, so I am hoping I am doing something else wrong.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I would appreciate any help you can provide.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Thank you!</DIV><DIV><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>********************************************</DIV><DIV>Kevin Tegtmeier</DIV><DIV>HPC-3 Scientific Computing Resources</DIV><DIV>Los Alamos National Laboratory</DIV><DIV>email: kevint at lanl dot gov</DIV><DIV>********************************************</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></DIV></BODY></HTML>