Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1300642

Re: [PATCH 0/6] generic relative extable support

Show all headers | View raw

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@de.ibm.com>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/6] generic relative extable support Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-03 17:10 +0100
  [PATCH 1/6] extable: add support for relative extables to search and sort routines Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-03 17:10 +0100
    Re: [PATCH 1/6] extable: add support for relative extables to search  and sort routines Helge Deller <deller@gmx.de> - 2016-01-04 22:10 +0100
  [PATCH 5/6] ia64/extable: use generic search and sort routines Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-03 17:10 +0100
  [PATCH 4/6] x86/extable: use generic search and sort routines Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-03 17:10 +0100
  [PATCH 6/6] arm64: switch to relative exception tables Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-03 17:10 +0100
    Re: [PATCH 6/6] arm64: switch to relative exception tables Will Deacon <will.deacon@arm.com> - 2016-01-04 15:50 +0100
      Re: [PATCH 6/6] arm64: switch to relative exception tables "H. Peter Anvin" <hpa@zytor.com> - 2016-01-04 19:20 +0100
        RE: [PATCH 6/6] arm64: switch to relative exception tables "Luck, Tony" <tony.luck@intel.com> - 2016-01-04 19:30 +0100
          Re: [PATCH 6/6] arm64: switch to relative exception tables "H. Peter Anvin" <hpa@zytor.com> - 2016-01-04 19:50 +0100
          Re: [PATCH 6/6] arm64: switch to relative exception tables Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-04 20:30 +0100
            Re: [PATCH 6/6] arm64: switch to relative exception tables "Luck, Tony" <tony.luck@intel.com> - 2016-01-04 20:50 +0100
          Re: [PATCH 6/6] arm64: switch to relative exception tables "H. Peter Anvin" <hpa@zytor.com> - 2016-01-04 20:30 +0100
  Re: [PATCH 0/6] generic relative extable support Heiko Carstens <heiko.carstens@de.ibm.com> - 2016-01-04 12:30 +0100
    Re: [PATCH 0/6] generic relative extable support "H. Peter Anvin" <hpa@zytor.com> - 2016-01-04 19:20 +0100

csiph-web