XFEATURE_PKRU
#define XFEATURE_MASK_PKRU (1 << XFEATURE_PKRU)
if (xfeature == XFEATURE_PKRU) {
xpkru = __raw_xsave_addr(xsave, XFEATURE_PKRU);
case XFEATURE_PKRU: return XCHECK_SZ(sz, nr, struct pkru_state);
[XFEATURE_PKRU] = X86_FEATURE_OSPKE,
return __put_user(pkru, (unsigned int __user *)get_xsave_addr_user(buf, XFEATURE_PKRU));