From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leonid Yegoshin Subject: Re: [v3,11/41] mips: reuse asm-generic/barrier.h Date: Wed, 27 Jan 2016 16:48:45 -0800 Message-ID: <56A9656D.3080707@imgtec.com> References: <20160113104516.GE25458@arm.com> <5696CF08.8080700@imgtec.com> <20160114121449.GC15828@arm.com> <5697F6D2.60409@imgtec.com> <20160114203430.GC3818@linux.vnet.ibm.com> <56980C91.1010403@imgtec.com> <20160114212913.GF3818@linux.vnet.ibm.com> <569814F2.50801@imgtec.com> <20160114225510.GJ3818@linux.vnet.ibm.com> <56983054.4070807@imgtec.com> <20160115004753.GN3818@linux.vnet.ibm.com> <56984642.3090106@imgtec.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============9087233927382373719==" Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org List-Archive: List-Post: To: "Maciej W. Rozycki" Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, "Michael S. Tsirkin" , Peter Zijlstra , Will Deacon , virtualization@lists.linux-foundation.org, "H. Peter Anvin" , sparclinux@vger.kernel.org, Ingo Molnar , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Russell King - ARM Linux , user-mode-linux-devel@lists.sourceforge.net, linux-sh@vger.kernel.org, Michael Ellerman , x86@kernel.org, xen-devel@lists.xenproject.org, Ingo Molnar , paulmck@linux.vnet.ibm.com, linux-xtensa@linux-xtensa.org, james.hogan@imgtec.com, Arnd Bergmann , Stefano Stabellini , adi-buildroot-devel@lists.sourceforge.net, ddaney.cavm@gmail.com, Thomas Gleixner , linux-me List-ID: --===============9087233927382373719== Content-Type: multipart/alternative; boundary="------------070307010207020903010305" --------------070307010207020903010305 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit On 01/27/2016 03:26 AM, Maciej W. Rozycki wrote: > On Fri, 15 Jan 2016, Leonid Yegoshin wrote: > >>> So you need to build a different kernel for some types of MIPS systems? >>> Or do you do boot-time rewriting, like a number of other arches do? >> I don't know. I would like to have responses. Ralf asked Maciej about old >> systems and that came nowhere. Even rewrite - don't know what to do with that: >> no lightweight SYNC or no SYNC at all - yes, it is still possible that SYNC on >> some systems can be too heavy or even harmful, nobody tested that. > I don't recall being asked; In http://patchwork.linux-mips.org/patch/10505/ the very last mesg exchange is: Maciej, do you have an R4000 / R4600 / R5000 / R7000 / SiByte system at hand to test this? ... Ralf Maciej W. Rozycki - June 5, 2015, 9:18 p.m. On Fri, 5 Jun 2015, Ralf Baechle wrote: > do you have an R4000 / R4600 / R5000 / R7000 / SiByte system at hand to > test this? I should be able to check R4400 (that is virtually the same as R4000) next week or so. As to SiByte -- not before next month I'm afraid. I don't have access to any of the other processors you named. You may want to find a better person if you want to accept this change soon. Maciej ... and that stops forever... - Leonid. --------------070307010207020903010305 Content-Type: text/html; charset="windows-1252" Content-Transfer-Encoding: 7bit
On 01/27/2016 03:26 AM, Maciej W. Rozycki wrote:
On Fri, 15 Jan 2016, Leonid Yegoshin wrote:


So you need to build a different kernel for some types of MIPS systems?
Or do you do boot-time rewriting, like a number of other arches do?

I don't know. I would like to have responses. Ralf asked Maciej about old
systems and that came nowhere. Even rewrite - don't know what to do with that:
no lightweight SYNC or no SYNC at all - yes, it is still possible that SYNC on
some systems can be too heavy or even harmful, nobody tested that.

 I don't recall being asked;
In http://patchwork.linux-mips.org/patch/10505/ the very last mesg exchange is:

Maciej,

do you have an R4000 / R4600 / R5000 / R7000 / SiByte system at hand to
test this?
...
  Ralf
Maciej W. Rozycki - June 5, 2015, 9:18 p.m.
On Fri, 5 Jun 2015, Ralf Baechle wrote:

> do you have an R4000 / R4600 / R5000 / R7000 / SiByte system at hand to
> test this?

 I should be able to check R4400 (that is virtually the same as R4000) 
next week or so.  As to SiByte -- not before next month I'm afraid.  I 
don't have access to any of the other processors you named.  You may 
want to find a better person if you want to accept this change soon.

  Maciej
... and that stops forever...

- Leonid.
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