HGATP_PAGE_SHIFT
#define kvm_riscv_gstage_pgd_size (1UL << (HGATP_PAGE_SHIFT + kvm_riscv_gstage_pgd_xbits))
#define kvm_riscv_gstage_gpa_bits (HGATP_PAGE_SHIFT + \
unsigned long shift = HGATP_PAGE_SHIFT + (kvm_riscv_gstage_index_bits * level);