Hi Michal,
On 26-07-17 17:18, Michal Necasek wrote:
Hi Hans,
The message is harmless. It's triggered because VirtualBox currently does not
expose the host CPU microcode revision to guest operating systems. I don't
think we want to do that without fully understanding what sorts of assumptions
operating systems might make when they see the actual revision.
At any rate, VirtualBox currently doesn't support TSC deadline timers so the
message is simply noise.
Thank you for your reaction. I understand that the message is just noise, but
it would
still be nice to do something about it, Linux distributions have gone through
great
efforts to offer a smooth boot experience without scary text-messages and an
error
like this breaks that part of the user-experience.
I wonder why the kernel prints the message at all if vbox does not support
TSC deadline timers, could it be that somehow the capability bit for that
gets leaked from the host to the guest even though it is not supported ?
Regards,
Hans
----- Original Message -----
From: hdego...@redhat.com
To: vbox-dev@virtualbox.org
Sent: Monday, July 24, 2017 9:49:56 AM GMT +01:00 Amsterdam / Berlin / Bern /
Rome / Stockholm / Vienna
Subject: [vbox-dev] New kernel error message when running 4.13 as guest
Hi all,
I just upgraded a vbox guest to 4.13, the good news is
everything works fine, but one thing which I noticed, which
would be nice to fix is this new error message:
[ 0.000000] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please
update microcode to version: 0xb2 (or later)
This is on a Skylake host with no special settings done
to the guest (I selected the Fedora 64 bit template
when installing).
Regards,
Hans
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