Baoquan He <bhe at redhat.com> writes: > On 11/02/16 at 04:00am, Thiago Jung Bauermann wrote: >> Hello, >> >> The kexec_file code currently builds the purgatory as a partially linked object >> (using ld -r). Is there a particular reason to use that instead of a position >> independent executable (PIE)? > > It's taken as "-r", relocatable in user space kexec-tools too originally. > I think Vivek just keeps it the same when moving into kernel. At least on x86 using just -r removed the need for a GOT and all of the other nasty dynamic relocatable bits, that are not needed when the you don't want to share your text bits with the page cache. I can see reaons for refactoring code but I expect PIE expecutables need a GOT and all of that pain in the neck stuff that can just be avoided by building the code to run at an absolute address. So far I have not seen ELF relocations that are difficult to process. Eric
