Lines Matching full:length

21 * PSTATE.SM, PSTATE.ZA, the streaming mode vector length, the ZA and (when
78 SME defines a second vector length similar to the SVE vector length which
110   length, the state of the PR_SME_VL_INHERIT flag, and the deferred vector
111   length (if any), is preserved across all syscalls, subject to the specific
127   the thread's vector length (in za_context.vl).
167 * The vector length cannot be changed via signal return.  If za_context.vl in
168   the signal frame does not match the current vector length, the signal return
179 length:
183     Sets the vector length of the calling thread and related flags, where
186     vl is the desired vector length, where sve_vl_valid(vl) must be true.
192 	    Inherit the current vector length across execve().  Otherwise, the
193 	    vector length is reset to the system default at execve().  (See
198 	    Defer the requested vector length change until the next execve()
207 	    length, while avoiding runtime side effects in the caller.
214 	EINVAL: SME not supported, invalid vector length requested, or
220     * Either the calling thread's vector length or the deferred vector length
227     * Any previously outstanding deferred vector length change in the calling
231       PR_SME_GET_VL.  The vector length reported in this value is the new
232       current vector length for this thread if PR_SME_SET_VL_ONEXEC was not
233       present in arg; otherwise, the reported vector length is the deferred
234       vector length that will be applied at the next execve() by the calling
237     * Changing the vector length causes all of ZA, ZTn, P0..P15, FFR and all
241       length, or calling PR_SME_SET_VL with the PR_SME_SET_VL_ONEXEC flag,
242       does not constitute a change to the vector length for this purpose.
244     * Changing the vector length causes PSTATE.ZA and PSTATE.SM to be cleared.
246       length, or calling PR_SME_SET_VL with the PR_SME_SET_VL_ONEXEC flag,
247       does not constitute a change to the vector length for this purpose.
252     Gets the vector length of the calling thread.
258 	    Vector length will be inherited across execve().
261     vector length change (which would only normally be the case between a
264     To extract the vector length from the result, bitwise and it with
298 	thread changes its vector length etc.
302 	Target thread's current streaming vector length, in bytes.
306 	Maximum possible streaming vector length for the target thread.
317 * The effects of changing the vector length and/or flags are equivalent to
328   case the vector length and flags are changed and PSTATE.ZA is set to 0
335   for the vector length actually set.  It is up to the caller to translate the
350   registers data will be interpreted with the current vector length, not
351   the vector length configured for use on exec.
381   to set the default vector length for userspace processes:
386     default vector length to the specified value rounded to a supported value
387     using the same rules as for setting vector length via PR_SME_SET_VL.
392     At boot, the default vector length is initially set to 32 or the maximum
393     supported vector length, whichever is smaller and supported.  This
394     determines the initial vector length of the init process (PID 1).
396     Reading this file returns the current system default vector length.
398 * At every execve() call, the new vector length of the new process is set to
399   the system default vector length, unless
404     * a deferred vector length change is pending, established via the
407 * Modifying the system default vector length does not affect the vector length
432 * A new vector length controlling the size of ZA and the Z registers when in
433   streaming mode, separately to the vector length used for SVE when not in
435   vector length or the set of vector lengths supported for the two modes in
436   a given system have any relationship.  The streaming mode vector length