On Mon, Dec 29, 2008 at 03:10:28PM +0100, Helge Deller wrote: > [PATCH 2/2] parisc: fix module loading failure of large modules > > On 32bit (and sometimes 64bit) and with big kernel modules like xfs or > ipv6 the relocation types R_PARISC_PCREL17F and R_PARISC_PCREL22F may > fail to reach their PLT stub if we only create one big stub array for > all sections at the beginning of the core or init section. > > With this patch we now instead append individual PLT stub entries > directly at the end of the code sections where the stubs are actually > called. This reduces the distance between the PCREL location and the > stub entry so that the relocations can be fulfilled. > > The kernel module loader will call module_additional_section_size() and > request us to return the amount of additional memory we need for the > stubs of each section. The final section size of the code segment will > then be increased by that value when the kernel layouts the final > addresses of all sections. > > Tested with 32- and 64bit kernels. > > Signed-off-by: Helge Deller <deller@xxxxxx> > > diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig > index 644a70b..cbb622f 100644 > --- a/arch/parisc/Kconfig > +++ b/arch/parisc/Kconfig > @@ -34,6 +34,9 @@ config RWSEM_GENERIC_SPINLOCK > config RWSEM_XCHGADD_ALGORITHM > bool > > +config ARCH_WANTS_STUBS_BEHIND_SECTIONS > + def_bool y > + The recommended practive today is: In some relevant Kconfig file add: config HAVE_MODULE_SECTION_STUBS bool And then in arch/$ARCH/Kconfig do: config PARISC ... select HAVE_MODULE_SECTION_STUBS ... The select are supposed to be sorted alphabetically but people seems to use a different alphabet for each arch. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
