kernel/fpu/xstate.c

60  * XSAVE buffer, both supervisor and user xstates.
118 	 * returns ECX[0] set to (1) for a supervisor state, and cleared (0)  in xfeature_is_supervisor()
217 	 * Unsupported supervisor xstates should not be found in  in fpu__init_cpu_xstate()
221 	WARN_ONCE(unsup_bits, "x86/fpu: Found unsupported supervisor xstates: 0x%llx\n",  in fpu__init_cpu_xstate()
236 	 * MSR_IA32_XSS sets supervisor states managed by XSAVES.  in fpu__init_cpu_xstate()
281 		 * If an xfeature is supervisor state, the offset in EBX is  in setup_xstate_features()
402  * Setup offsets of a supervisor-state-only XSAVES buffer:
480 	 * Only XSAVES supports supervisor states and it uses compacted  in xfeature_uncompacted_offset()
481 	 * format. Checking a supervisor state's uncompacted offset is  in xfeature_uncompacted_offset()
505  * 1. saving of supervisor/system state
520 	/* No unknown or supervisor features may be set */  in validate_user_xstate_header()
634 		 * Supervisor state components can be managed only by  in do_extra_xstate_size_checks()
685  * Get the total size of the enabled xstates without the dynamic supervisor
818 	 * Find supervisor xstates supported by the processor.  in fpu__init_system_xstate()
852 	 * supervisor xstates:  in fpu__init_system_xstate()
1235  * Save only supervisor states to the kernel buffer.  This blows away all
1264 	 * At this point, the buffer has only supervisor states and must be  in copy_supervisor_to_kernel()
1290  * copy_dynamic_supervisor_to_kernel() - Save dynamic supervisor states to
1293  * @mask: Represent the dynamic supervisor features saved into the xsave area
1295  * Only the dynamic supervisor states sets in the mask are saved into the xsave
1297  * supervisor feature). Besides the dynamic supervisor states, the legacy
1298  * region and XSAVE header are also saved into the xsave area. The supervisor
1326  * copy_kernel_to_dynamic_supervisor() - Restore dynamic supervisor states from
1329  * @mask: Represent the dynamic supervisor features restored from the xsave area
1331  * Only the dynamic supervisor states sets in the mask are restored from the
1333  * dynamic supervisor feature). Besides the dynamic supervisor states, the
1335  * supervisor features in the XFEATURE_MASK_SUPERVISOR_SUPPORTED and