[Qemu-devel] [FYI] sh: linux kernel without iotrap is available for better system emulation performance

[Qemu-devel] [FYI] sh: linux kernel without iotrap is available for better system emulation performance

[Shin-ichiro KAWASAKI]

Hi, SH4 developers.

It turns out that io trap is one of the reason of bad qemu-sh 'r2d' system
emulation performance.  To avoid this problem, 'noiotrap' kernel command
line option is added : http://news.gmane.org/gmane.linux.ports.sh.devel

The packaged zImage is available at this URL.
http://www.assembla.com/spaces/qemu-sh4/documents/b-tmCWiRmr3PiLeJe5afGb/download/sh-test-0.2.tar.bz2

Hope it helps!


Regards,
Shin-ichiro KAWASAKI

Re: [Qemu-devel] [FYI] sh: linux kernel without iotrap is available for better system emulation performance

[Aurelien Jarno]

On Mon, Apr 06, 2009 at 11:31:10PM +0900, Shin-ichiro KAWASAKI wrote:
> Hi, SH4 developers.
> 
> It turns out that io trap is one of the reason of bad qemu-sh 'r2d' system
> emulation performance.  To avoid this problem, 'noiotrap' kernel command
> line option is added : http://news.gmane.org/gmane.linux.ports.sh.devel
> 
> The packaged zImage is available at this URL.
> http://www.assembla.com/spaces/qemu-sh4/documents/b-tmCWiRmr3PiLeJe5afGb/download/sh-test-0.2.tar.bz2
> 

We currently don't have an SH4 "demo" image available on the website. Do
you think it would be possible to add this one?

-- 
Aurelien Jarno	                        GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net

Re: [Qemu-devel] [FYI] sh: linux kernel without iotrap is available for better system emulation performance

[Shin-ichiro KAWASAKI]

Aurelien Jarno wrote:
> On Mon, Apr 06, 2009 at 11:31:10PM +0900, Shin-ichiro KAWASAKI wrote:
>> Hi, SH4 developers.
>>
>> It turns out that io trap is one of the reason of bad qemu-sh 'r2d' system
>> emulation performance.  To avoid this problem, 'noiotrap' kernel command
>> line option is added : http://news.gmane.org/gmane.linux.ports.sh.devel
>>
>> The packaged zImage is available at this URL.
>> http://www.assembla.com/spaces/qemu-sh4/documents/b-tmCWiRmr3PiLeJe5afGb/download/sh-test-0.2.tar.bz2
>>
> 
> We currently don't have an SH4 "demo" image available on the website. Do
> you think it would be possible to add this one?

Yes.  I hope that the package to be placed at the following page, so
that qemu-sh users can find it easily.

http://www.nongnu.org/qemu/download.html


Regards,
Shin-ichiro KAWASAKI

Re: [Qemu-devel] [FYI] sh: linux kernel without iotrap is available for better system emulation performance

[Aurelien Jarno]

On Wed, Apr 08, 2009 at 09:32:45AM +0900, Shin-ichiro KAWASAKI wrote:
> Aurelien Jarno wrote:
>> On Mon, Apr 06, 2009 at 11:31:10PM +0900, Shin-ichiro KAWASAKI wrote:
>>> Hi, SH4 developers.
>>>
>>> It turns out that io trap is one of the reason of bad qemu-sh 'r2d' system
>>> emulation performance.  To avoid this problem, 'noiotrap' kernel command
>>> line option is added : http://news.gmane.org/gmane.linux.ports.sh.devel
>>>
>>> The packaged zImage is available at this URL.
>>> http://www.assembla.com/spaces/qemu-sh4/documents/b-tmCWiRmr3PiLeJe5afGb/download/sh-test-0.2.tar.bz2
>>>
>>
>> We currently don't have an SH4 "demo" image available on the website. Do
>> you think it would be possible to add this one?
>
> Yes.  I hope that the package to be placed at the following page, so
> that qemu-sh users can find it easily.
>
> http://www.nongnu.org/qemu/download.html
>

I have just added it.

-- 
Aurelien Jarno	                        GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net