FPMR
#define KERNEL_HWCAP_FPMR __khwcap2_feature(FPMR)
kvm_has_feat((k), ID_AA64PFR2_EL1, FPMR, IMP))
ARM64_CPUID_FIELDS(ID_AA64PFR2_EL1, FPMR, IMP)
HWCAP_CAP(ID_AA64PFR2_EL1, FPMR, IMP, CAP_HWCAP, KERNEL_HWCAP_FPMR),
#define FEAT_FPMR ID_AA64PFR2_EL1, FPMR, IMP
fp_state.fpmr = __ctxt_sys_reg(&vcpu->arch.ctxt, FPMR);
write_sysreg_s(__vcpu_sys_reg(vcpu, FPMR), SYS_FPMR);
__vcpu_assign_sys_reg(vcpu, FPMR, read_sysreg_s(SYS_FPMR));
{ SYS_DESC(SYS_FPMR), undef_access, reset_val, FPMR, 0, .visibility = fp8_visibility },