On Thu, 1 Dec 2016 11:48:09 +0100 Stanislav Kozina <skoz...@redhat.com> wrote:
> On 12/01/2016 05:13 AM, Don Zickus wrote: > > ... > > > I think GregKH pointed to one such tool, libabigail? We are working on > > others too. > > I should mention one of the others here: > https://github.com/skozina/kabi-dw > > It's quite comparable to libabigail in the way it works, the main > differences are: > - written in pure C > - depends only on elf-utils and flex/yacc > - it's much simpler (4k LOC) > - stores the type information in the text files and compares those > instead of directly comparing two sets of DWARF data Now this seems much better for distro ABI checking. The next question is, do they need any kernel support for rare cases where they do have to break the ABI of an export? Simple rename of the function with a _v2 postfix might be enough. We could retain some per symbol versioning in the kernel if needed, but how much would it actually help? Thanks, Nick
