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Subject: Re: [PATCH v5 13/19] x86/cpufeatures: Add flag to track whether MSR
 IA32_FEAT_CTL is configured
To:     Sean Christopherson <sean.j.christopherson@intel.com>
Cc:     TonyWWang-oc@zhaoxin.com, acme@kernel.org,
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 <20200225221234.GL9245@linux.intel.com>
From:   Jacob Keller <jacob.e.keller@intel.com>
Organization: Intel Corporation
Message-ID: <1eaf6fbe-0adb-5074-3bc4-1e8327e0cdb3@intel.com>
Date:   Tue, 25 Feb 2020 14:52:32 -0800
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On 2/25/2020 2:12 PM, Sean Christopherson wrote:
> On Tue, Feb 25, 2020 at 01:49:13PM -0800, Jacob Keller wrote:
>> Hi Sean,
>>
>> I suspect something is wrong and the features are enabled even though
>> the BIOS has it disabled, leading to later failure because of this.
> 
> Hrm.  On the failing kernel, what are the values of MSR 0x3a for all CPUs,
> i.e. what's the output of 'sudo rdmsr -a 0x3a'?
> 

On the old (fedora 30) kernel, every cpu reports as '1'.

I can't easily test the failing kernel because it crashes during boot.

Thanks,
Jake