From: Nicolas Pitre <nico@fluxnic.net>
To: "Woodhouse, David" <david.woodhouse@intel.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
Kim Phillips <kim.phillips@freescale.com>,
Borislav Petkov <bp@alien8.de>,
Andrew Morton <akpm@linux-foundation.org>,
Daniel Santos <daniel.santos@pobox.com>,
David Rientjes <rientjes@google.com>,
Rusty Russell <rusty@rustcorp.com.au>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Rob Herring <robherring2@gmail.com>
Subject: Re: [RFC] arm: use built-in byte swap function
Date: Fri, 08 Feb 2013 17:47:33 -0500 (EST) [thread overview]
Message-ID: <alpine.LFD.2.02.1302081745500.6300@xanadu.home> (raw)
In-Reply-To: <1360363233.6066.283.camel@shinybook.infradead.org>
On Fri, 8 Feb 2013, Woodhouse, David wrote:
> On Fri, 2013-02-08 at 15:04 -0500, Nicolas Pitre wrote:
> > On Fri, 8 Feb 2013, Woodhouse, David wrote:
> >
> > > On Thu, 2013-02-07 at 18:13 +0000, Russell King - ARM Linux wrote:
> > > >
> > > > However, the biggest reason not to use libgcc is that we want to control
> > > > what gets used in the kernel - for example, no floating point, and no
> > > > use of 64 x 64bit division.
> > >
> > > Which is all very sensible. But there's no particular reason we couldn't
> > > add a __bswap[sd]i2 to the kernel's version of libgcc if we wanted to.
> >
> > Absolutely.
>
> And then ARM can just set ARCH_USE_BUILTIN_BSWAP like other
> architectures do, right?
If that turns out to be beneficial over what we have now, then yes.
I didn't read back the whole thread to form an opinion though.
Nicolas
WARNING: multiple messages have this Message-ID (diff)
From: nico@fluxnic.net (Nicolas Pitre)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] arm: use built-in byte swap function
Date: Fri, 08 Feb 2013 17:47:33 -0500 (EST) [thread overview]
Message-ID: <alpine.LFD.2.02.1302081745500.6300@xanadu.home> (raw)
In-Reply-To: <1360363233.6066.283.camel@shinybook.infradead.org>
On Fri, 8 Feb 2013, Woodhouse, David wrote:
> On Fri, 2013-02-08 at 15:04 -0500, Nicolas Pitre wrote:
> > On Fri, 8 Feb 2013, Woodhouse, David wrote:
> >
> > > On Thu, 2013-02-07 at 18:13 +0000, Russell King - ARM Linux wrote:
> > > >
> > > > However, the biggest reason not to use libgcc is that we want to control
> > > > what gets used in the kernel - for example, no floating point, and no
> > > > use of 64 x 64bit division.
> > >
> > > Which is all very sensible. But there's no particular reason we couldn't
> > > add a __bswap[sd]i2 to the kernel's version of libgcc if we wanted to.
> >
> > Absolutely.
>
> And then ARM can just set ARCH_USE_BUILTIN_BSWAP like other
> architectures do, right?
If that turns out to be beneficial over what we have now, then yes.
I didn't read back the whole thread to form an opinion though.
Nicolas
next prev parent reply other threads:[~2013-02-08 22:47 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 1:30 [RFC] arm: use built-in byte swap function Kim Phillips
2013-01-29 1:30 ` Kim Phillips
2013-01-29 8:35 ` Borislav Petkov
2013-01-29 8:35 ` Borislav Petkov
2013-01-29 16:46 ` Woodhouse, David
2013-01-29 16:46 ` Woodhouse, David
2013-01-29 17:42 ` Borislav Petkov
2013-01-29 17:42 ` Borislav Petkov
2013-01-29 17:55 ` Woodhouse, David
2013-01-29 17:55 ` Woodhouse, David
2013-01-29 18:10 ` Borislav Petkov
2013-01-29 18:10 ` Borislav Petkov
2013-01-30 10:22 ` Woodhouse, David
2013-01-30 10:22 ` Woodhouse, David
2013-01-31 2:09 ` Kim Phillips
2013-01-31 2:09 ` Kim Phillips
2013-01-31 6:44 ` Borislav Petkov
2013-01-31 6:44 ` Borislav Petkov
2013-01-31 9:28 ` Russell King - ARM Linux
2013-01-31 9:28 ` Russell King - ARM Linux
2013-01-31 20:59 ` Kim Phillips
2013-01-31 20:59 ` Kim Phillips
2013-01-31 21:33 ` Borislav Petkov
2013-01-31 21:33 ` Borislav Petkov
2013-01-31 22:11 ` Woodhouse, David
2013-01-31 22:11 ` Woodhouse, David
2013-02-01 0:37 ` [PATCH v4] " Kim Phillips
2013-02-01 0:37 ` Kim Phillips
2013-02-01 10:46 ` Russell King - ARM Linux
2013-02-01 10:46 ` Russell King - ARM Linux
2013-02-01 1:17 ` [RFC] " Russell King - ARM Linux
2013-02-01 1:17 ` Russell King - ARM Linux
2013-02-01 7:33 ` Woodhouse, David
2013-02-01 7:33 ` Woodhouse, David
2013-02-06 3:04 ` Kim Phillips
2013-02-06 3:04 ` Kim Phillips
2013-02-06 9:02 ` Woodhouse, David
2013-02-06 9:02 ` Woodhouse, David
2013-02-07 1:19 ` Kim Phillips
2013-02-07 1:19 ` Kim Phillips
2013-02-07 10:19 ` Will Newton
2013-02-07 10:19 ` Will Newton
2013-02-07 10:43 ` Catalin Marinas
2013-02-07 10:43 ` Catalin Marinas
2013-02-07 18:13 ` Russell King - ARM Linux
2013-02-07 18:13 ` Russell King - ARM Linux
2013-02-08 17:25 ` Woodhouse, David
2013-02-08 17:25 ` Woodhouse, David
2013-02-08 20:04 ` Nicolas Pitre
2013-02-08 20:04 ` Nicolas Pitre
2013-02-08 22:40 ` Woodhouse, David
2013-02-08 22:40 ` Woodhouse, David
2013-02-08 22:47 ` Nicolas Pitre [this message]
2013-02-08 22:47 ` Nicolas Pitre
2013-02-09 1:12 ` Kim Phillips
2013-02-09 1:12 ` Kim Phillips
2013-02-09 3:16 ` Nicolas Pitre
2013-02-09 3:16 ` Nicolas Pitre
2013-02-20 2:31 ` Kim Phillips
2013-02-20 2:31 ` Kim Phillips
2013-02-20 2:38 ` Stephen Boyd
2013-02-20 2:38 ` Stephen Boyd
2013-02-20 3:17 ` Nicolas Pitre
2013-02-20 3:17 ` Nicolas Pitre
2013-02-20 10:38 ` Woodhouse, David
2013-02-20 10:38 ` Woodhouse, David
2013-02-20 13:36 ` Nicolas Pitre
2013-02-20 13:36 ` Nicolas Pitre
2013-02-20 13:44 ` Woodhouse, David
2013-02-20 13:44 ` Woodhouse, David
2013-02-20 14:06 ` Nicolas Pitre
2013-02-20 14:06 ` Nicolas Pitre
2013-02-20 14:53 ` Woodhouse, David
2013-02-20 14:53 ` Woodhouse, David
2013-02-20 15:43 ` Nicolas Pitre
2013-02-20 15:43 ` Nicolas Pitre
2013-02-21 3:49 ` Kim Phillips
2013-02-21 3:49 ` Kim Phillips
2013-02-21 4:29 ` Nicolas Pitre
2013-02-21 4:29 ` Nicolas Pitre
2013-02-21 6:52 ` Kim Phillips
2013-02-21 6:52 ` Kim Phillips
2013-02-21 16:40 ` Nicolas Pitre
2013-02-21 16:40 ` Nicolas Pitre
2013-02-22 2:33 ` Kim Phillips
2013-02-22 2:33 ` Kim Phillips
2013-02-22 3:40 ` Nicolas Pitre
2013-02-22 3:40 ` Nicolas Pitre
2013-02-23 1:40 ` [PATCH v6] " Kim Phillips
2013-02-23 1:40 ` Kim Phillips
2013-02-23 2:40 ` Nicolas Pitre
2013-02-23 2:40 ` Nicolas Pitre
2013-02-23 23:20 ` Woodhouse, David
2013-02-23 23:20 ` Woodhouse, David
2013-05-23 16:46 ` [PATCH v7] " Kim Phillips
2013-05-23 16:46 ` Kim Phillips
2013-05-23 20:09 ` Nicolas Pitre
2013-05-23 20:09 ` Nicolas Pitre
2013-05-23 23:13 ` Russell King - ARM Linux
2013-05-23 23:13 ` Russell King - ARM Linux
2013-06-06 22:12 ` Russell King - ARM Linux
2013-06-06 22:12 ` Russell King - ARM Linux
2013-06-06 22:23 ` Borislav Petkov
2013-06-06 22:23 ` Borislav Petkov
2013-06-07 0:03 ` Stephen Rothwell
2013-06-07 0:03 ` Stephen Rothwell
2013-05-26 5:38 ` Dirk Behme
2013-05-26 9:30 ` Woodhouse, David
2013-10-27 2:41 ` Nicolas Pitre
2013-10-27 2:41 ` Nicolas Pitre
2013-11-05 21:45 ` Kim Phillips
2013-11-05 21:45 ` Kim Phillips
2013-02-21 16:37 ` [RFC] " Woodhouse, David
2013-02-21 16:37 ` Woodhouse, David
2013-02-21 17:27 ` Nicolas Pitre
2013-02-21 17:27 ` Nicolas Pitre
2013-03-13 13:35 ` Woodhouse, David
2013-03-13 13:35 ` Woodhouse, David
2013-01-29 14:13 ` Russell King - ARM Linux
2013-01-29 14:13 ` Russell King - ARM Linux
2013-01-29 14:43 ` Woodhouse, David
2013-01-29 14:43 ` Woodhouse, David
2013-01-29 14:53 ` Rob Herring
2013-01-29 14:53 ` Rob Herring
2013-01-29 15:10 ` Woodhouse, David
2013-01-29 15:10 ` Woodhouse, David
2013-01-31 11:44 Woodhouse, David
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