From: Andy Lutomirski <luto@amacapital.net>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
linux390@de.ibm.com, Chris Metcalf <cmetcalf@tilera.com>,
Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Nathan Lynch <Nathan_Lynch@mentor.com>, X86 ML <x86@kernel.org>,
linux-arch <linux-arch@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH v3] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 15 Jul 2014 07:47:26 -0700 [thread overview]
Message-ID: <CALCETrXG6nL4K=Er+kv5-CXBDVa0TLg9yR6iePnMyE2ufXgKkw@mail.gmail.com> (raw)
In-Reply-To: <70f331f59e620dc4e66bd3fa095e6f6b744b532b.1405281639.git.luto@amacapital.net>
On Sun, Jul 13, 2014 at 1:01 PM, Andy Lutomirski <luto@amacapital.net> wrote:
> The core mm code will provide a default gate area based on
> FIXADDR_USER_START and FIXADDR_USER_END if
> !defined(__HAVE_ARCH_GATE_AREA) && defined(AT_SYSINFO_EHDR).
>
> This default is only useful for ia64. arm64, ppc, s390, sh, tile,
> 64-bit UML, and x86_32 have their own code just to disable it. arm,
> 32-bit UML, and x86_64 have gate areas, but they have their own
> implementations.
>
> This gets rid of the default and moves the code into ia64.
>
> This should save some code on architectures without a gate area: it's
> now possible to inline the gate_area functions in the default case.
Can one of you pull this somewhere? Otherwise I can put it somewhere
stable and ask for -next inclusion, but that seems like overkill for a
single patch.
--Andy
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next prev parent reply other threads:[~2014-07-15 14:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-13 20:01 Andy Lutomirski
2014-07-15 14:47 ` Andy Lutomirski [this message]
2014-07-18 10:14 ` Will Deacon
2014-07-18 10:20 ` Richard Weinberger
2014-07-18 16:53 ` Andy Lutomirski
2014-07-18 17:28 ` Nathan Lynch
2014-07-18 18:36 ` H. Peter Anvin
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