tree a57ea48af230f7310c6992d09f5739c30e1cecbe
parent cc9caf4b222eefdeb3f1a3fc8ef64d73339c7e78
author Nicolas Pitre <npitre@baylibre.com> 1655168161 -0400
committer Maureen Helm <maureen.helm@intel.com> 1656017760 -0500

riscv: pmp: properly initialize per-thread m-mode/u-mode entry array

Retrieve the pmpaddr value matching the last global PMP slot and add it
to the per-thread m-mode and u-mode entry array. Even if that value is
not written out again on thread context switch, that value can still be
used by set_pmp_entry() to attempt a single-slot TOR mapping with it.

Nicely abstract this with the new z_riscv_pmp_thread_init() where the
PMP_M_MODE(thread) and PMP_U_MODE(thread) argument generators can be
used.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>