From: Arnd Bergmann <arnd@arndb.de>
To: Ley Foon Tan <lftan@altera.com>
Cc: Linux-Arch <linux-arch@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
Chung-Lin Tang <cltang@codesourcery.com>
Subject: Re: [PATCH v5 29/29] nios2: Build infrastructure
Date: Thu, 30 Oct 2014 12:33:38 +0100 [thread overview]
Message-ID: <11875981.eJaWCbGJJT@wuerfel> (raw)
In-Reply-To: <CAFiDJ59LZSwKBzVuuzfH_5772-BR74EH=d=FeBbWvEXjfpisug@mail.gmail.com>
On Thursday 30 October 2014 18:44:37 Ley Foon Tan wrote:
> >
> > I don't remember what all of these are, but at least some of them seem
> > to be concerned with 64-bit division. By convention, we don't provide those
> > in the Linux kernel but instead require all code to use the do_div()
> > macro instead.
> Do you mean kernel doesn't support 64 bit division result for a 32-bit
> architecture? Because do_div() only support 32-bit division result for
> 32-bit architecture.
Correct. If you need a full 64-bit division on a 32-bit kernel, the
assumption is that your driver has a bug.
Arnd
next prev parent reply other threads:[~2014-10-30 11:33 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 8:24 [PATCH v5 00/29] nios2 Linux kernel port Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 01/29] asm-generic: add generic futex for !CONFIG_SMP Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-25 20:50 ` Thomas Gleixner
2014-10-24 8:24 ` [PATCH v5 02/29] nios2: Assembly macros and definitions Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 03/29] nios2: Kernel booting and initialization Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 04/29] nios2: Exception handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 9:15 ` Geert Uytterhoeven
2014-10-27 9:43 ` Ley Foon Tan
2014-10-27 9:43 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 05/29] nios2: Traps exception handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 06/29] nios2: Memory management Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 07/29] nios2: I/O Mapping Ley Foon Tan
2014-10-28 13:30 ` Arnd Bergmann
2014-10-28 13:30 ` Arnd Bergmann
2014-10-29 7:00 ` Ley Foon Tan
2014-10-29 7:00 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 08/29] nios2: MMU Fault handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 09/29] nios2: Page table management Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 10/29] nios2: Process management Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 11/29] nios2: Cache handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 12/29] nios2: TLB handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 13/29] nios2: Interrupt handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 14/29] nios2: DMA mapping API Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 15/29] Add ELF machine define for Nios2 Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 16/29] nios2: ELF definitions Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 17/29] nios2: System calls handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 18/29] nios2: Signal handling support Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 19/29] nios2: Library functions Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 20/29] nios2: Device tree support Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 21/29] nios2: Time keeping Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-25 21:10 ` Thomas Gleixner
2014-10-25 21:10 ` Thomas Gleixner
2014-10-28 2:46 ` Ley Foon Tan
2014-10-28 2:46 ` Ley Foon Tan
2014-10-28 9:23 ` Arnd Bergmann
2014-10-28 9:23 ` Arnd Bergmann
2014-10-28 10:43 ` Ley Foon Tan
2014-10-28 10:43 ` Ley Foon Tan
2014-10-28 13:39 ` Arnd Bergmann
2014-10-28 13:39 ` Arnd Bergmann
2014-10-29 7:36 ` Ley Foon Tan
2014-10-28 15:15 ` Thomas Gleixner
2014-10-30 9:03 ` Ley Foon Tan
2014-10-30 9:03 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 22/29] nios2: Cpuinfo handling Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 23/29] nios2: Miscellaneous header files Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 24/29] nios2: Nios2 registers Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 25/29] nios2: Module support Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 26/29] nios2: ptrace support Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 27/29] MAINTAINERS: Add nios2 maintainer Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 28/29] Documentation: Add documentation for Nios2 architecture Ley Foon Tan
2014-10-24 8:24 ` Ley Foon Tan
2014-10-24 8:24 ` [PATCH v5 29/29] nios2: Build infrastructure Ley Foon Tan
2014-10-24 9:10 ` Geert Uytterhoeven
2014-10-24 9:10 ` Geert Uytterhoeven
2014-10-27 9:44 ` Ley Foon Tan
2014-10-27 9:44 ` Ley Foon Tan
2014-10-28 13:38 ` Arnd Bergmann
2014-10-28 13:38 ` Arnd Bergmann
2014-10-30 10:44 ` Ley Foon Tan
2014-10-30 10:44 ` Ley Foon Tan
2014-10-30 10:49 ` Thomas Gleixner
2014-10-30 11:33 ` Arnd Bergmann [this message]
2014-10-30 11:33 ` Arnd Bergmann
2014-10-31 1:28 ` Ley Foon Tan
2014-10-31 1:28 ` Ley Foon Tan
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