gustavonihei commented on code in PR #6603:
URL: https://github.com/apache/incubator-nuttx/pull/6603#discussion_r919283352
##########
arch/xtensa/src/common/xtensa_schedsigaction.c:
##########
@@ -155,6 +156,9 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t
sigdeliver)
(PS_INTLEVEL(XCHAL_EXCM_LEVEL) | PS_UM |
PS_WOE | PS_CALLINC(1));
#endif
+#ifndef CONFIG_BUILD_FLAT
+ mpu_raiseprivilege(CURRENT_REGS);
Review Comment:
I preferred to not prefix it with `xtensa_` to avoid confusion and also to
prevent any kind of clash with the Xtensa MPU block, which ESP32 does not embed.
Newer Xtensa-based Espressif chips (ESP32-S2 and ESP32-S3) contain the PMS
peripheral, which also performs this hardware and software resource management
in a similar manner.
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