On 14 January 2016 at 08:57, Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote:
> On Mon, Jan 11, 2016 at 02:59:46PM +0100, Ard Biesheuvel wrote:
>> On 5 January 2016 at 16:19, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> 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).
>> >
>>
>> [...]
>>
>> Now that I have collected acks for all the patches, I think this is
>> good to go in.
>>
>> @Andrew: since this touches 5 different architectures, is this perhaps
>> something that could go in via your tree after -rc1?
>> (assuming that the s390 bugfix has been merged by then)
>
> Your s390 bugfix has been merged. See git commit id bcb7825a77f4 ("s390:
> fix normalization bug in exception table sorting").
>
Thanks for the head's up.
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