From: heiko.carstens@de.ibm.com (Heiko Carstens)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/6] generic relative extable support
Date: Mon, 4 Jan 2016 12:20:26 +0100 [thread overview]
Message-ID: <20160104112026.GC4179@osiris> (raw)
In-Reply-To: <1451837157-447-1-git-send-email-ard.biesheuvel@linaro.org>
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>
next prev parent reply other threads:[~2016-01-04 11:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-03 16:05 [PATCH 0/6] generic relative extable support Ard Biesheuvel
2016-01-03 16:05 ` [PATCH 1/6] extable: add support for relative extables to search and sort routines Ard Biesheuvel
2016-01-04 21:05 ` Helge Deller
2016-01-03 16:05 ` [PATCH 2/6] alpha/extable: use generic " Ard Biesheuvel
2016-01-03 16:05 ` [PATCH 3/6] s390/extable: " Ard Biesheuvel
2016-01-03 16:05 ` [PATCH 4/6] x86/extable: " Ard Biesheuvel
2016-01-03 16:05 ` [PATCH 5/6] ia64/extable: " Ard Biesheuvel
2016-01-03 16:05 ` [PATCH 6/6] arm64: switch to relative exception tables Ard Biesheuvel
2016-01-04 14:46 ` Will Deacon
2016-01-04 18:13 ` H. Peter Anvin
2016-01-04 18:20 ` Luck, Tony
2016-01-04 18:47 ` H. Peter Anvin
2016-01-04 19:21 ` H. Peter Anvin
2016-01-04 19:28 ` Ard Biesheuvel
2016-01-04 19:49 ` Luck, Tony
2016-01-04 11:20 ` Heiko Carstens [this message]
2016-01-04 18:15 ` [PATCH 0/6] generic relative extable support H. Peter Anvin
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