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SubjectRe: [PATCH] x86/kernel/cpu/amd.c: don't apply the lahf_lm workaround in a hypervisor


On Thu, 13 Jul 2017, Borislav Petkov wrote:

> On Wed, Jul 12, 2017 at 10:27:44PM -0400, Mikulas Patocka wrote:
> > It is not strictly needed, but it is annoying. I work in the console and
> > it is annoying to see these "unhandled rdmsr" messages printed over the
> > screen every time I reboot a virtual machine.
>
> Those messages are already pr_debug_ratelimited(). Fix your loglevel to
> not see them.

The message 'unhandled rdmsr' is printed with "pr_err_ratelimited" in the
kernels up to and including 4.9. So it can't be easily silenced, silencing
it silences any errors.

(and I can't use kernels newer that 4.4 on the host machine because of
broken hibernation)

Mikulas

> --
> Regards/Gruss,
> Boris.
>
> ECO tip #101: Trim your mails when you reply.
> --

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