On Sun, Jan 03, 2016 at 05:05:51PM +0100, Ard Biesheuvel wrote: > There are currently four architectures (x86, ia64, alpha and s390) whose > user-access exception tables are relative to the table entry address rather > than absolute. Each of these architectures has its own search_extable() and > sort_extable() implementation, which are not only mostly identical to each > other, but also deviate very little from the generic absolute implementations > in lib/extable.c that they override. > > So before making arm64 the fifth architecture that reimplements this, let's > refactor the existing code so that all of these architectures use common code > for searching and sorting the relative extables. Archs may set > ARCH_HAS_RELATIVE_EXTABLE to indicate that the table consists of a pair of > relative ints, and may define swap_ex_entry_fixup() if the fixup member needs > special treatment in the swapping step of the sorting routine (such as alpha). > > Note that the s390 patch applies on top of the following patch: > > http://article.gmane.org/gmane.linux.kernel/2117036 > > which fixes a bug I spotted while working on this code. Since that probably > needs to go to -stable, I broke it out and posted it separately. > > Ard Biesheuvel (6): > extable: add support for relative extables to search and sort routines > alpha/extable: use generic search and sort routines > s390/extable: use generic search and sort routines > x86/extable: use generic search and sort routines > ia64/extable: use generic search and sort routines > arm64: switch to relative exception tables For the s390 bits: Acked-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
