kernel/fpu/xstate.h

1 /* SPDX-License-Identifier: GPL-2.0 */
20 		xsave->header.xcomp_bv = mask | XCOMP_BV_COMPACTED_FORMAT;  in xstate_init_xcomp_bv()
25 	struct fpu *fpu = &current->group_leader->thread.fpu;  in xstate_get_group_perm()
29 	perm = guest ? &fpu->guest_perm : &fpu->perm;  in xstate_get_group_perm()
30 	return READ_ONCE(perm->__state_perm);  in xstate_get_group_perm()
49 				    enum xstate_copy_mode mode);
83 	/* Mark PKRU as in-use so that it is restored correctly. */  in update_pkru_in_sigframe()
86 	err =  __put_user(xstate_bv, &buf->header.xfeatures);  in update_pkru_in_sigframe()
127  * If XSAVES is enabled, it replaces XSAVEC because it supports supervisor
181 		u64 xfd = fpstate->xfd;  in xfd_update_state()
195 	return -EPERM;  in __xfd_enable_feature()
207 	u64 mask = fpstate->xfeatures;  in os_xsave()
215 	XSTATE_XSAVE(&fpstate->regs.xsave, lmask, hmask, err);  in os_xsave()
232 	XSTATE_XRESTORE(&fpstate->regs.xsave, lmask, hmask);  in os_xrstor()
235 /* Restore of supervisor state. Does not require XFD */
242 	XSTATE_XRESTORE(&fpstate->regs.xsave, lmask, hmask);  in os_xrstor_supervisor()
251  * This optimization is user-visible.  Only use for states where
261 	/* In-use features must be written: */  in xfeatures_need_sigframe_write()
264 	/* Also write all non-optimizable sigframe features: */  in xfeatures_need_sigframe_write()
291 	struct fpstate *fpstate = current->thread.fpu.fpstate;  in xsave_to_user_sigframe()
292 	u64 mask = fpstate->user_xfeatures;  in xsave_to_user_sigframe()
325 	xfd_validate_state(current->thread.fpu.fpstate, mask, true);  in xrstor_from_user_sigframe()
340 	struct xregs_state *xstate = &fpstate->regs.xsave;  in os_xrstor_safe()