[PATCH v5 0/4] zicfilp and zicfiss support in opensbi
Deepak Gupta
debug at rivosinc.com
Tue Sep 10 09:35:18 PDT 2024
v5 for zicfilp and zicfiss support in opensbi
---
v5:
- OpenSBI parses ISA string which is recieved in FDT and if ISA
string matches, it sets extension availablity in extension bitmap.
Thus removed zicfilp and zicfiss trap based and mstatus detection
v4:
- fixed up commit message in patch 2
v3:
- added fwft implementation for shadow stack and landing pad interface
v2:
- added mpelp for 32bit (mstatush) and its handling in trad redirection
- removed default SSE enabling. it'll break shadow stack enabled kernel
- put sw check delegation at correct place
Deepak Gupta (4):
include: adding support for Zicfilp / Zicfiss encodings
lib: sbi: add zicfilp/zicfiss and elp cfi state reflect back in status
lib: sbi: sw check exception delegation
lib: sbi: fwft: implement landing pad and shadow stack fwft interface
include/sbi/riscv_encoding.h | 7 ++++
include/sbi/sbi_hart.h | 3 ++
lib/sbi/sbi_fwft.c | 74 ++++++++++++++++++++++++++++++++++++
lib/sbi/sbi_hart.c | 5 ++-
lib/sbi/sbi_trap.c | 20 ++++++++++
5 files changed, 108 insertions(+), 1 deletion(-)
--
2.44.0
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