Re: Issue iommu unrecognized on amd computer

[oxjo@xxxxxxxxx]

I put it on the linux command line indeed, here is the log with iommu=debug.

I can install Xen with a debug build or test a fix if needed.
I just need some guides because all I did for know is apt or dnf install Xen.


Le jeudi 1 février 2024 à 11:57, Jan Beulich <jbeulich@xxxxxxxx> a écrit :

> On 01.02.2024 09:16, oxjo@xxxxxxxxx wrote:
> 
> > Following our interaction on matrix, I send you the boot log `xl dmesg` 
> > output of my computer, booting with `iommu=debug` options on linux 
> > 6.6.13-200.fc39.
> 
> 
> There's no "iommu=debug" anywhere in sight:
> 
> (XEN) Command line: placeholder no-real-mode edd=off
> 
> Did you mistakenly put it on the Linux command line?
> 
> Nevertheless there are relevant messages already without the extra
> verbosity (and without you using a debug build of Xen, which would
> be preferable):
> 
> (XEN) AMD-Vi: Warning: IVMD: [c9f1c000,c9f42000) is not (entirely) in 
> reserved memory
> (XEN) AMD-Vi: Error: IVMD: page at c9f1c000 can't be converted
> (XEN) AMD-Vi: Error initialization
> 
> Quoting the respective entry from the memory map:
> 
> (XEN) [00000000c8f58000, 00000000c9f57fff] (ACPI NVS)
> 
> Both Roger and I look to agree that this condition we have
> 
> if ( !(type & (RAM_TYPE_RESERVED | RAM_TYPE_ACPI |
> RAM_TYPE_UNUSABLE)) )
> 
> is inverted in some way. We merely need to agree in which way it
> wants adjusting.
> 
> Jan

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