Re: [Xen-devel] [PATCH for-4.11] x86/msr: Correct the emulation behaviour of MSR_PRED_CMD

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.04.18 at 12:56, <andrew.cooper3@xxxxxxxxxx> wrote:
> The behaviour of reserved bits in MSR_PRED_CMD changed between beta and
> production microcode, and now raises a #GP fault for set reserved bits.

Interesting - quite unfortunate a change. Plus - I can't find where this is 
being
said.

> The AMD spec for future hardware also specifies this behaviour.

I can find this one (albeit not in the PRM).

> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

With some clarification on the origin of the Intel related information
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Jan



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