Re: [PATCH RFC 0/2] ignore LBR-related MSRs

From: Denis V. Lunev
Date: Wed Dec 06 2017 - 11:46:25 EST


On 12/06/2017 07:39 PM, Jan Dakinevich wrote:
> On Wed, 6 Dec 2017 10:06:48 -0500
> Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
>
>> On Wed, Dec 06, 2017 at 02:43:01PM +0300, Jan Dakinevich wrote:
>>> w2k16 essentials fails to boot if underlying hypervisor lacks of
>>> support for LBR MSRs. To workaround the issue, it suggessted to
>>> ignore these MSRs (but not all).
>> This is without any hyperv enablement? Meaning normal stock guest?
>>
> Yes, it is normal guest. No hyperv enlightenments were enabled, and
> "-cpu host" was specified in QEMU command line.

The problem also exists with HyperV enabled.

Den