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Date: Sun, 7 Aug 2011 11:19:07 -0400
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From: Super Bisquit <superbisquit@gmail.com>
To: Nathan Whitehorn <nwhitehorn@freebsd.org>
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Cc: freebsd-ppc@freebsd.org
Subject: Re: Lags and setjmp
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On 8/6/11, Super Bisquit <superbisquit@gmail.com> wrote:
> On Sat, Aug 6, 2011 at 11:37 AM, Nathan Whitehorn
> <nwhitehorn@freebsd.org>wrote:
>
>> On 08/05/11 10:47, Super Bisquit wrote:
>>
>>> The file /usr/src/sys/powerpc/powerpc/**setjmp.S has
>>>
>>> #ifdef __powerpc64__
>>>
>>>  at line nine. Maybe this is affecting the system because:
>>> the lag seems to occur on Xorg/Xserver with the cursor having to be
>>> moved
>>> before there is a response.
>>> I'm wondering if setting the vale to powerpc instead of powerpc64 would
>>> stop
>>> this action.
>>>
>>>
>> It wouldn't for the reason Justin said, and this file only applies to the
>> kernel besides. I've also never experienced this bug you're referring to.
>> Is
>> X using longjmp/setjmp() internally? One thing we do not do is
>> save/restore
>> FP registers for long jumps. It's not required by the spec, but Linux
>> does
>> do it.
>> -Nathan
>>
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>>
>
> How's it going?
>
> Anyway, I'm not sure. I'll restart X with a more verbose output and will
> attach the file next reply.
> I'm curious, what machines are you using for the 9.0 PowerPC ?
>


I did not find anything. This problem only occurs with the G4 systems.
Unless someone else has the same equipment, it's just an "annoyance"
bug for me.