KVM_REG_ARM64_SVE_FFR
const u64 preg_id_max = KVM_REG_ARM64_SVE_FFR(SVE_NUM_SLICES - 1);
BUILD_BUG_ON(KVM_REG_ARM64_SVE_FFR(0) != last_preg_id + 1);
reg = KVM_REG_ARM64_SVE_FFR(i);
TEST_ASSERT(id == KVM_REG_ARM64_SVE_FFR(0),
KVM_REG_ARM64_SVE_FFR(0),