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ThorstenHirsch
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Joined: 25 Sep 2003
Posts: 111

PostPosted: Wed Mar 30, 2005 5:29 pm    Post subject: Fast Instruction Access MMU Miss Reply with quote

Hi,

today I wanted to upgrade from 2.4.29-sparc-r1 to 2.6.11-gentoo-r4. Well, it worked more or less with the 1st kernel I made, more or less meaning that I forgot the sermouse module and console fb was not working anymore. So I built a new one. But since I am testing this new one I always get the following error while booting:
Quote:
SILO Version 1.4.8
boot:
Allocated 8 Megs of memory at 0x40000000 for kernel
Loaded Kernel version 2.6.11

Remapping the kernel... Fast Instruction Access MMU Miss
ok

I already did a "reset-all" and a "test-all", but they couldn't help me, everything's working fine. The machine is an Ultra 10.
Google found some pages for this error message telling me that I should check the size of my kernel image. Meanwhile my kernel is not only < 3,5MB but even < 3500000 bytes, but I still get the same error message.

Any ideas?

Solaris 10 on the same machine is still working fine.
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ThorstenHirsch
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Joined: 25 Sep 2003
Posts: 111

PostPosted: Thu Mar 31, 2005 4:03 pm    Post subject: Reply with quote

Great. My new kernel (more things enabled) is telling me
Quote:

SILO Version 1.4.9
boot:
Allocated 8 Megs of memory at 0x40000000 for kernel
Loaded Kernel version 2.6.11

Remapping the kernel... Data Access Exception

...and as you can see, I've updated silo. But this error already came with silo 1.4.8 and the new kernel.
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ThorstenHirsch
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Joined: 25 Sep 2003
Posts: 111

PostPosted: Thu Mar 31, 2005 4:59 pm    Post subject: Reply with quote

And when I try to boot my old kernel (2.4.29-sparc-r1, the one I was working with over months!) I get a nice little kernel ooops just after this message:
Quote:
unable to handle kernel paging request at virtual address 0000000140000000
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Drunkula
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Joined: 28 Jul 2003
Posts: 257
Location: Denton, TX - USA

PostPosted: Thu Mar 31, 2005 7:06 pm    Post subject: Reply with quote

Sounds like you hit the motherlode! Seriously though I get nervous whenever I update the kernel or SILO on my Ultra 2E. When it works I try to leave it as-is. Not sure why it seems so hit-or-miss on some boxes.
:?
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ThorstenHirsch
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Joined: 25 Sep 2003
Posts: 111

PostPosted: Fri Apr 01, 2005 8:54 am    Post subject: Reply with quote

Error message of the day:
Quote:

SILO Version 1.4.9
boot:
Allocated 8 Megs of memory at 0x40000000 for kernel
Loaded Kernel version 2.6.11

Remapping the kernel... Illegal Instruction

This message came when I took out memory banks 1+2 or memory banks 3+4 (so I took out 512MB and left in 512MB).

Then I gave up and re-put all the memory in. Now kernel 2.6 is booting - hooray! ...well, but it doesn't detect my hda, but well, this is probably my mistake in the kernel config. After all, my old kernel is working again.
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jbwillia
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Joined: 07 May 2004
Posts: 108
Location: TN, USA

PostPosted: Thu Jul 21, 2005 3:38 am    Post subject: Reply with quote

WOW, I just came across the most interesting solution to this problem that I could have imagined. I rebooted my machine (an U60 2x450MHz 512M 2x18.1G hd) many times and everytime I had gotten the fast instruction access MMU miss error. I even tried running reset and reset-all at the ok prompt and it wuld reset and then return the same result. At this point I was just tired of it, so I turned the machine off while I went to google away. I came across one page where the guy said he'd solved his problem with a hard reboot. I dismissed it thinking that by running the resets that I had that it couldn't do anything. However, I beg to to differ now; I asked my wife from across the room to turn the machine on as I was going to check boot the livecd and check the size of my kernel and whatnot. Soon after from across the room I saw the black screen ad kernel booting.

Sooo, either my wife has the magic touch or a hard reboot really was the solution. Either way, I figured the hard reboot was worth posting for some other poor soul who runs into this problem.
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HackingM2
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Joined: 26 Jul 2004
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Location: Cambridge, England

PostPosted: Fri Oct 13, 2006 2:26 am    Post subject: Reply with quote

I've just encountered what looks to be the same problem using anything >= 2.6.14.

I have a 2.6.13-r5 kernel booting fine.

Anyone have any suggestions / solutions other that those already presented?
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HackingM2
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PostPosted: Fri Oct 27, 2006 6:55 pm    Post subject: Reply with quote

I have since made some progress diagnosing this issue further (and edited the above post to reflect this) which I thought someone may find useful...
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Galahad
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Joined: 12 Feb 2003
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PostPosted: Mon Oct 30, 2006 2:13 pm    Post subject: Reply with quote

The firmware on some suns is a huge steaming pile ;)

There are a lot of firmware commands on my netra that result in "Fast Data access mmu miss", which is probably some similar error.
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HackingM2
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PostPosted: Mon Oct 30, 2006 2:57 pm    Post subject: Reply with quote

Galahad wrote:
The firmware on some suns is a huge steaming pile.


Tell me about it. :roll:

This issue seems to occur using OBP versions 4.0.5, 4.3.2, 4.5.9 and 4.17.1 so I don't think it is firmware related.

Which version of OBP are you using? Can you boot a kernel >= 2.6.14 ?
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