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From: "Maciej W. Rozycki" <macro@orcam.me.uk>
To: "H. Nikolaus Schaller" <hns@goldelico.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Huacai Chen <chenhuacai@kernel.org>,
	Huacai Chen <chenhuacai@loongson.cn>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	linux-arch@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] Reinstate and improve MIPS `do_div' implementation
Date: Wed, 21 Apr 2021 21:04:10 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.21.2104211904490.44318@angie.orcam.me.uk> (raw)
In-Reply-To: <51BC7C74-68BF-4A8E-8CFB-DB4EBBC89706@goldelico.com>

On Wed, 21 Apr 2021, H. Nikolaus Schaller wrote:

> > In the end I have included four patches on this occasion: 1/4 is the test 
> > module, 2/4 is an inline documentation fix/clarification for the `do_div' 
> > wrapper, 3/4 enables the MIPS `__div64_32' backend and 4/4 adds a small 
> > performance improvement to it.
> 
> How can I apply them to the kernel? There is something wrong which makes
> git am fail.

 I don't know.  The changes were made against vanilla 5.12-rc7, but then 
the pieces affected have not changed for ages.  FWIW I can `git am' the 
series as received back just fine.

> > These changes have been verified with a DECstation system with an R3400 
> > MIPS I processor @40MHz and a MTI Malta system with a 5Kc MIPS64 processor 
> > @160MHz.
> 
> I'd like to test on ~320 MHz JZ4730.

 Sure, I'd love to hear how this code performs with other implementations.  

  Maciej

  reply	other threads:[~2021-04-21 19:04 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-20  2:50 [PATCH 0/4] Reinstate and improve MIPS `do_div' implementation Maciej W. Rozycki
2021-04-20  2:50 ` [PATCH 1/4] lib/math: Add a `do_div' test module Maciej W. Rozycki
2021-04-20  2:50 ` [PATCH 2/4] div64: Correct inline documentation for `do_div' Maciej W. Rozycki
2021-04-20  2:50 ` [PATCH 3/4] MIPS: Reinstate platform `__div64_32' handler Maciej W. Rozycki
2021-04-22 18:36   ` Guenter Roeck
2021-04-22 20:43     ` Maciej W. Rozycki
2021-04-20  2:50 ` [PATCH 4/4] MIPS: Avoid DIVU in `__div64_32' is result would be zero Maciej W. Rozycki
2021-04-21 16:05   ` H. Nikolaus Schaller
2021-04-21 16:16     ` Maciej W. Rozycki
2021-04-22  7:56       ` Thomas Bogendoerfer
2021-04-22  9:12         ` Maciej W. Rozycki
2021-04-22 11:08           ` Thomas Bogendoerfer
2021-04-22 20:47             ` Maciej W. Rozycki
2021-04-27 12:16           ` Maciej W. Rozycki
2021-04-22 11:17   ` Andreas Schwab
2021-04-21 12:01 ` [PATCH 0/4] Reinstate and improve MIPS `do_div' implementation Thomas Bogendoerfer
2021-04-21 13:12   ` Maciej W. Rozycki
2021-04-21 16:00 ` H. Nikolaus Schaller
2021-04-21 19:04   ` Maciej W. Rozycki [this message]
2021-04-22  5:53     ` H. Nikolaus Schaller
2021-04-22 13:39       ` Jiaxun Yang
2021-04-22 15:58         ` Maciej W. Rozycki
2021-04-22 16:00         ` H. Nikolaus Schaller
2021-04-22 16:55           ` Maciej W. Rozycki
2021-04-22 17:06             ` H. Nikolaus Schaller

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