[PATCH 0/2] lib: sbi: Fix Smrnmi/RNMI trap handling issues

[Nia Su]

This series fixes two issues in the Smrnmi extension and RNMI trap
handling code:

Patch 1 moves the Smrnmi CSR setup into a dedicated
sbi_smrnmi_hart_init() helper so it also runs on the non-retentive
suspend resume path (sbi_hart_reinit()), and relaxes
smrnmi_handlers_init to allow a NULL callback and to report failure
via an int return value instead of void.

Patch 2 fixes sbi_trap_rnmi_handler(), which never updates
prev_context and can inherit a stale value from an earlier trap
that reused the same M-mode exception-stack slot. This can make
sbi_trap_error() loop indefinitely instead of printing diagnostics.
The fix maintains the trap-context pointer the same way
sbi_trap_handler() does, so nested contexts always link correctly.

Signed-off-by: Nia Su <nia.su at sifive.com>
---
Nia Su (1):
      lib: sbi: Fix stale prev_context in RNMI handler

Nylon Chen (1):
      lib: sbi: Fix Smrnmi init and non-retentive suspend handling

 include/sbi/sbi_hart.h     |  1 +
 include/sbi/sbi_platform.h |  2 +-
 lib/sbi/sbi_hart.c         | 55 +++++++++++++++++++++++++++++-----------------
 lib/sbi/sbi_trap.c         | 10 +++++++--
 4 files changed, 45 insertions(+), 23 deletions(-)
---
base-commit: 4e79fd7de59f1b2899092c1a84ce68c8ebc68f93
change-id: 20260826-rnmi-trap-fixes-91347b53b0dd

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