Re: [PATCH 1/1] vmgenid: emit uevent when VMGENID updates

Alexander Graf
2023-06-19T09:15:11Z

On 31.05.23 11:51, Babis Chalios wrote:
> We receive an ACPI notification every time the VM Generation ID changes
> and use the new ID as fresh randomness added to the entropy pool. This
> commits emits a uevent every time we receive the ACPI notification, as a
> means to notify the user space that it now is in a new VM.
>
> Signed-off-by: Babis Chalios <bchalios@amazon.es>

Thanks Babis! Super simple, yet very effective way to notify system
software that it may need to adopt to a new environment. I know that the
systemd folks are super interested in that to for example regenerate
randomly generated MAC addresses after a clone operation.

Reviewed-by: Alexander Graf <graf@amazon.com>

Alex

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