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Re: [Xen-devel] [PATCH V3] x86, amd_ucode: Support multiple container files appended together

>>> On 26.06.14 at 22:00, <boris.ostrovsky@xxxxxxxxxx> wrote:
> The trouble is that if I have two files in my hands, both called 
> microcode_amd_fam15h.bin, I don't know which one is the more up-to-date 
> (would be nice to have a tool to print file info).
> Of course, one can argue that in that case I shouldn't be using neither 
> but HW makes its own verification of patches so in principle trying both 
> should be safe (provided that SW tries not to load older revision).

I think we should focus on getting things to work with realistic
blobs, i.e. such that distros and their tools would generate. If you
update a respective package, it'll be clear which blob is the latest,
and there's generally not going to be two blobs for the same family
put on a single system. People obtaining ucode blobs manually from
elsewhere should know what they're doing and not try to paste
together two of them targeting the same family.


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