loader causes reboot
Jonathan Noack
noackjr at alumni.rice.edu
Sun May 8 21:27:56 PDT 2005
On 05/08/05 22:19, David Gurvich wrote:
> On Sunday 08 May 2005 23:57, Jonathan Noack wrote:
>>On 05/08/05 14:29, David Gurvich wrote:
>>>cdrom /boot/loader from 5.3 has no problem. However, after updating
>>>world from kernel, /boot/loader is replaced with cvs version. This one
>>>goes into endless cycle of reboots. When replaced with /boot/loader from
>>>cdrom boots normally.
>>
>>Are you setting CPUTYPE? A few people have reported an endless reboot
>>with the athlon-xp or pentium-m settings. I experience this on my
>>athlon-xp and the only workaround I've found is just to not set CPUTYPE.
>> This problem is way beyond my feeble skills to track down and fix, but
>>it doesn't seem to affect many people and no one has stepped up to
>>resolve it. As it is easily worked around, I've brought it up a few
>>times but haven't made too big of a fuss. Come to think of it, why
>>didn't I ever open a PR? Hmm... perhaps I'll do that at work tomorrow
>>(this is on a machine at work).
>
> I am setting CPUTYPE?=athlon-xp
> I never considered that might be the cause. If it is then there is clearly a
> bug in the configuration of the loader. Perhaps when the loader is being
> compiled it should use the most basic flags possible for just that.
Please don't top post.
There was an attempt to resolve this issue a few months ago. The commit
was rev. 1.10 of src/sys/boot/i386/Makefile.inc and the log message was,
"Ensure GCC does not use FP registers in integer code." This fix was
MFC'd to RELENG_5 a day later and is present in 5.4.
For the life of me I can't remember if I tested the change when it was
made. I think it didn't work for me, but I'll test it again tomorrow.
--
Jonathan Noack | noackjr at alumni.rice.edu | OpenPGP: 0x991D8195
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