Re: [PATCH] x86/mm: Print the encryption features correctly when a paravisor is present

From: Dave Hansen
Date: Fri Oct 20 2023 - 16:13:42 EST


On 10/20/23 13:00, Dexuan Cui wrote:
>> OK, then what good is this patch in the first place? If you are right,
>> then this would give equivalent information:
>>
>> cat /proc/cpuinfo | grep -q Intel && echo 'TDX'
>> cat /proc/cpuinfo | grep -q AMD && echo 'SEV'
>>
>> No kernel patching needed, right?
> Currently arch/x86/mm/mem_encrypt.c: print_mem_encrypt_feature_info()
> prints an incorrect and confusing message
> "Memory Encryption Features active: AMD SEV".
> when an Intel TDX VM with a paravisor runs on Hyper-V.
>
> So I think a kernel patch is needed.

How about either removing the message entirely or removing the ": AMD
SEV" part?