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);
102  * If XSAVES is enabled, it replaces XSAVEC because it supports supervisor
160 		u64 xfd = fpstate->xfd;  in xfd_update_state()
174 	return -EPERM;  in __xfd_enable_feature()
186 	u64 mask = fpstate->xfeatures;  in os_xsave()
194 	XSTATE_XSAVE(&fpstate->regs.xsave, lmask, hmask, err);  in os_xsave()
211 	XSTATE_XRESTORE(&fpstate->regs.xsave, lmask, hmask);  in os_xrstor()
214 /* Restore of supervisor state. Does not require XFD */
221 	XSTATE_XRESTORE(&fpstate->regs.xsave, lmask, hmask);  in os_xrstor_supervisor()
230  * This optimization is user-visible.  Only use for states where
240 	/* In-use features must be written: */  in xfeatures_need_sigframe_write()
243 	/* Also write all non-optimizable sigframe features: */  in xfeatures_need_sigframe_write()
270 	struct fpstate *fpstate = current->thread.fpu.fpstate;  in xsave_to_user_sigframe()
271 	u64 mask = fpstate->user_xfeatures;  in xsave_to_user_sigframe()
301 	xfd_validate_state(current->thread.fpu.fpstate, mask, true);  in xrstor_from_user_sigframe()
316 	struct xregs_state *xstate = &fpstate->regs.xsave;  in os_xrstor_safe()