What is Calgary in the boot sequence? [SOLVED]

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mr.travo

What is Calgary in the boot sequence? [SOLVED]

Post by mr.travo »

I am looking over my dmesg and seeing:

[ 0.000000] Calgary: detecting Calgary via BIOS EBDA area
[ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!

What is Calgary and what is this indicating? I have been looking on DDG and all I seem to pull up is information regarding everyone else's dmesg output and information all about Calgary Canada, LOL!

Thank you for your help and time. Trying to learn the ends and outs of the system under the hood. :mrgreen:
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thx-1138
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Re: What is Calgary in the boot sequence?

Post by thx-1138 »

...my (admitedly very limited) understanding of it is that is has to do with the way IOMMU is enabled / controlled on certain high-end IBM systems:
https://github.com/torvalds/linux/blob/ ... ptions.txt
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Flemur
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Re: What is Calgary in the boot sequence?

Post by Flemur »

mr.travo wrote:[ 0.000000] Calgary: detecting Calgary via BIOS EBDA area
[ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
Try a search on
"Calgary: detecting Calgary via BIOS"
(with the quotes). It seems to mean bad USB hardware...?
information all about Calgary Canada, LOL!
Linux seems to suffer a lot from stupid software names; it'd be nice if the names were meaningful and (at least sort-of) unique. Perhaps some people think the cutesy, uninformative names are...cute.
Please edit your original post title to include [SOLVED] if/when it is solved!
Your data and OS are backed up....right?
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xenopeek
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Re: What is Calgary in the boot sequence?

Post by xenopeek »

I think these messages are innocuous; I also have them in my kernel messages log (use journalctl -k instead of dmesg).

Best I could figure out Calgary is indeed an IBM developed IOMMU for their servers. An IOMMU is a memory management unit for attached devices to map their memory addresses onto physical memory. The image in this article may be helpful: https://www.cyberciti.biz/tips/tag/calgary-iommu-patch.
Image
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Flemur
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Re: What is Calgary in the boot sequence?

Post by Flemur »

xenopeek wrote:I think these messages are innocuous; I also have them in my kernel messages log (use journalctl -k instead of dmesg).
Misusing the slang word "bailing" sure inspires confidence! 'Cause booting the OS is a lot like parachuting from a disabled plane.
(Yes, I have the same garbage).
Please edit your original post title to include [SOLVED] if/when it is solved!
Your data and OS are backed up....right?
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mr.travo

Re: What is Calgary in the boot sequence?

Post by mr.travo »

Thank you all for your help and time! I will close this case and mark it as "solved". :lol:
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catweazel
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Re: What is Calgary in the boot sequence?

Post by catweazel »

Flemur wrote:Misusing the slang word "bailing" sure inspires confidence!
It's called an idiom :)
"There is, ultimately, only one truth -- cogito, ergo sum -- everything else is an assumption." - Me, my swansong.
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