This is basically a resend of the remaining relative extable rework patches that were queued for v4.6 in Andrew's tree for a couple of weeks, and then subsequently dropped due to conflicts with the arm64 and x86 subtrees in -next. Since the core patch that these remaining patches depend on is now queued in the arm64 tree for inclusion in v4.6, I have rebased this series onto next-20160310 so that they may be requeued and hopefully merged late during the next merge window. Alternatively, they could be picked up by each maintainer separately since they are all independent. Queueing them for v4.7 is likely to result in conflicts again, so I think that would be the least preferable option. Changes since v2: - dropped core patch and arm64 patches since they are already en route - fixed up a purely contextual conflict in the x86 patch, the functional changes were completely independent ---- v2 blurb ---- 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). Changes since v1: - introduce the _ASM_EXTABLE() cpp macro for arm64, and replace all open coded exception table entries with it, including an instance I missed in v1 in asm/word-at-a-time.h (suggested by hpa) - added acks to from arch maintainers Ard Biesheuvel (4): 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 arch/alpha/include/asm/uaccess.h | 10 +- arch/alpha/mm/Makefile | 2 +- arch/alpha/mm/extable.c | 92 ----------------- arch/ia64/include/asm/uaccess.h | 8 +- arch/ia64/mm/extable.c | 97 +----------------- arch/s390/include/asm/uaccess.h | 8 +- arch/s390/mm/Makefile | 2 +- arch/s390/mm/extable.c | 85 --------------- arch/x86/include/asm/uaccess.h | 5 +- arch/x86/mm/extable.c | 108 -------------------- 10 files changed, 17 insertions(+), 400 deletions(-) delete mode 100644 arch/alpha/mm/extable.c delete mode 100644 arch/s390/mm/extable.c -- 1.9.1 -- 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
