> From: Dave Hansen <dave.hansen@xxxxxxxxx> > Sent: Friday, October 20, 2023 11:40 AM > To: Dexuan Cui <decui@xxxxxxxxxxxxx>; KY Srinivasan > [...] > On 10/19/23 23:01, Dexuan Cui wrote: > > This patch only modifies x86 related files. I think it's unlikely to see > > a third hardware Coco implementation for x86 in the foreseeable feature > (?) > > 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.
