Re: [PATCH v5 13/19] x86/cpufeatures: Add flag to track whether MSR IA32_FEAT_CTL is configured

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2/25/2020 4:42 PM, Sean Christopherson wrote>> So there's something
weird going on. Maybe "boot_cpu_has" in the
>> vmx_disabled_by_bios is wrong? Hmm.
> 
> Hmm, perhaps a bug somewhere else is overwriting the cpufeatures bit for
> X86_FEATURE_VMX.  Let me see if I can reproduce from net-next.
> 

If you have any further suggestions for debugging, I'm happy to help try
to figure this out. To my eyes, it looks like somehow bits get reset...
It's definitely not clear to me how this happens.

There is the get_cpu_caps call.. but that seems to correctly call
apply_forced_caps at the end.

That's all I have time for today.

Thanks,
Jake



[Index of Archives]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]

  Powered by Linux