From: Will Deacon <will.deacon@arm.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "x86@kernel.org" <x86@kernel.org>,
"hpa@zytor.org" <hpa@zytor.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Catalin Marinas <Catalin.Marinas@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" <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>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>l
Subject: Re: [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 1 Jul 2014 10:23:46 +0100 [thread overview]
Message-ID: <20140701092345.GH28164@arm.com> (raw)
In-Reply-To: <e1656ab2adfd1891f62610abe3e85ad992ee0cbf.1404164803.git.luto@amacapital.net>
On Mon, Jun 30, 2014 at 10:53:20PM +0100, Andy Lutomirski 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.
For the arm64 bit:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
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WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Paul Mackerras <paulus@samba.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Richard Weinberger <richard@nod.at>,
"x86@kernel.org" <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Fenghua Yu <fenghua.yu@intel.com>,
"user-mode-linux-devel@lists.sourceforge.net"
<user-mode-linux-devel@lists.sourceforge.net>,
Jeff Dike <jdike@addtoit.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Thomas Gleixner <tglx@linutronix.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Tony Luck <tony.luck@intel.com>,
Nathan Lynch <Nathan_Lynch@mentor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hpa@zytor.org" <hpa@zytor.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
"linux390@de.ibm.com" <linux390@de.ibm.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 1 Jul 2014 10:23:46 +0100 [thread overview]
Message-ID: <20140701092345.GH28164@arm.com> (raw)
In-Reply-To: <e1656ab2adfd1891f62610abe3e85ad992ee0cbf.1404164803.git.luto@amacapital.net>
On Mon, Jun 30, 2014 at 10:53:20PM +0100, Andy Lutomirski 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.
For the arm64 bit:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Paul Mackerras <paulus@samba.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Richard Weinberger <richard@nod.at>,
"x86@kernel.org" <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"user-mode-linux-devel@lists.sourceforge.net"
<user-mode-linux-devel@lists.sourceforge.net>,
Jeff Dike <jdike@addtoit.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Thomas Gleixner <tglx@linutronix.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Tony Luck <tony.luck@intel.com>,
Nathan Lynch <Nathan_Lynch@mentor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hpa@zytor.org" <hpa@zytor.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
"linux390@de.ibm.com" <linux390@de.ibm.com>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 1 Jul 2014 10:23:46 +0100 [thread overview]
Message-ID: <20140701092345.GH28164@arm.com> (raw)
In-Reply-To: <e1656ab2adfd1891f62610abe3e85ad992ee0cbf.1404164803.git.luto@amacapital.net>
On Mon, Jun 30, 2014 at 10:53:20PM +0100, Andy Lutomirski 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.
For the arm64 bit:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
WARNING: multiple messages have this Message-ID (diff)
From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 1 Jul 2014 10:23:46 +0100 [thread overview]
Message-ID: <20140701092345.GH28164@arm.com> (raw)
In-Reply-To: <e1656ab2adfd1891f62610abe3e85ad992ee0cbf.1404164803.git.luto@amacapital.net>
On Mon, Jun 30, 2014 at 10:53:20PM +0100, Andy Lutomirski 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.
For the arm64 bit:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "x86@kernel.org" <x86@kernel.org>,
"hpa@zytor.org" <hpa@zytor.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Catalin Marinas <Catalin.Marinas@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" <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>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
"user-mode-linux-devel@lists.sourceforge.net"
<user-mode-linux-devel@lists.sourceforge.net>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area
Date: Tue, 1 Jul 2014 10:23:46 +0100 [thread overview]
Message-ID: <20140701092345.GH28164@arm.com> (raw)
In-Reply-To: <e1656ab2adfd1891f62610abe3e85ad992ee0cbf.1404164803.git.luto@amacapital.net>
On Mon, Jun 30, 2014 at 10:53:20PM +0100, Andy Lutomirski 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.
For the arm64 bit:
Acked-by: Will Deacon <will.deacon@arm.com>
Will
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2014-07-01 9:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-30 21:53 [PATCH v2 00/10] x86 and others: vsyscall and vdso cleanups Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 01/10] x86_64,vsyscall: Fix warn_bad_vsyscall log output Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 02/10] x86_64,vsyscall: Move all of the gate_area code to vsyscall_64.c Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 03/10] x86_64,vsyscall: Turn vsyscalls all the way off when vsyscall=none Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 04/10] x86_64,vdso: Remove jiffies from the vvar page Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 05/10] x86,vdso: Replace vgetcpu_mode with static_cpu_has Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 06/10] x86_64: Move getcpu code from vsyscall_64.c to vdso/vma.c Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 07/10] x86_64,vsyscall: Rewrite comment and clean up headers in vsyscall code Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 08/10] x86_64,vdso: Clean up vgetcpu init and merge the vdso initcalls Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area Andy Lutomirski
2014-06-30 21:53 ` Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 09/10] arm64, ia64, ppc, s390, sh, tile, um, x86, mm: " Andy Lutomirski
2014-06-30 21:53 ` Andy Lutomirski
2014-06-30 21:53 ` [PATCH v2 09/10] arm64,ia64,ppc,s390,sh,tile,um,x86,mm: " Andy Lutomirski
2014-06-30 21:53 ` Andy Lutomirski
2014-07-01 9:23 ` Will Deacon [this message]
2014-07-01 9:23 ` Will Deacon
2014-07-01 9:23 ` Will Deacon
2014-07-01 9:23 ` Will Deacon
2014-07-01 9:23 ` Will Deacon
2014-06-30 21:53 ` [PATCH v2 10/10] x86_64,vsyscall: Make vsyscall emulation configurable Andy Lutomirski
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