XFEATURE_ENABLED_PT
wrmsr(MSR_IA32_XSS, xss | XFEATURE_ENABLED_PT);
xsaves(save_area, XFEATURE_ENABLED_PT);
xrstors(save_area, XFEATURE_ENABLED_PT);
hdr->xstate_bv = XFEATURE_ENABLED_PT;
hdr->xstate_xcomp_bv = XFEATURE_ENABLED_PT |
#define PT_XSTATE_BV (PT_XSAVE_MASK | XFEATURE_ENABLED_PT)
if (!xsave_extfeature_supported(XFEATURE_ENABLED_PT, true)) {
XFEATURE_ENABLED_PT, true, true);