Re: [PATCH 1/3] kvm: wire up KVM_CAP_VM_GPA_BITS for x86

[Gerd Hoffmann]

> > +	kvm_caps.guest_phys_bits = boot_cpu_data.x86_phys_bits;
> 
> When KeyID_bits is non-zero, MAXPHYADDR != boot_cpu_data.x86_phys_bits
> here, you can check in detect_tme().

from detect_tme():

        /*
         * KeyID bits effectively lower the number of physical address
         * bits.  Update cpuinfo_x86::x86_phys_bits accordingly.
         */
        c->x86_phys_bits -= keyid_bits;

This looks like x86_phys_bits gets adjusted if needed.

take care,
  Gerd