From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 14 Dec 2021 00:46:53 +0000 (+0000)
Subject: MMU LOOKUP for fetch failed, priv mode is inversion of MSR.PR
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=26e8f778acc2828a2621a40d6f0ebbdc356a6ee1;p=soc.git

MMU LOOKUP for fetch failed, priv mode is inversion of MSR.PR
---

diff --git a/src/soc/fu/mmu/fsm.py b/src/soc/fu/mmu/fsm.py
index 7f0b81b4..752f7ef6 100644
--- a/src/soc/fu/mmu/fsm.py
+++ b/src/soc/fu/mmu/fsm.py
@@ -224,7 +224,7 @@ class FSMMMUStage(ControlBase):
                     # from accepting any other LD/ST requests.
                     comb += valid.eq(1)   # start "pulse"
                     comb += ldst.instr_fault.eq(blip)
-                    comb += ldst.priv_mode.eq(msr_i[MSR.PR])
+                    comb += ldst.priv_mode.eq(~msr_i[MSR.PR])
                     comb += ldst.maddr.eq(nia_i)
                     # XXX should not access this!
                     mmu_done_delay = Signal()