KVM TDX guest doesn't allow KVM clock. Although guest TD doesn't use a KVM
clock, qemu creates it by default with i386 KVM enabled. When guest TD
crashes and KVM_RUN returns -EIO, the following message is shown.
KVM_GET_CLOCK failed: Input/output error
The message confuses the user and misleads the debug process. Don't create
KVM_CLOCK when confidential computing is enabled, and it has a property to
disable the pv clock.
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
a9e2064e49