On Fri, Feb 1, 2019 at 12:24 AM Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: > > On 31/01/19 9:24 PM, Thomas Garnier wrote: > > Provide an option to default visibility to hidden except for key > > symbols. This option is disabled by default and will be used by x86_64 > > PIE support to remove errors between compilation units. > > > > The default visibility is also enabled for external symbols that are > > compared as they maybe equals (start/end of sections). In this case, > > older versions of GCC will remove the comparison if the symbols are > > hidden. This issue exists at least on gcc 4.9 and before. > > What does this mean, if anything, for what/how symbols appear in /proc/kallsyms? No, they will still appear in kallsyms. Some symbols are not absolute anymore or moved sections but still present. -- Thomas
