arch, arm: Update miscRegs in getTE
Normally, a translation will start via translateTiming/functional
which will check if the miscRegs have been updated and if so,
will update the TLB state accordingly. However, in a 2 stage
system, if there is a hit in stage 1, the resulting IPA will be
sent to the S2-TLB for translation via a getTE() function call
(via the stage2_lookup object). This will cause the state of the
S2-TLB to be out of sync.
Change-Id: I117e4032fc76d7d31f4f999887b5573a7e5811e6
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/14995
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
diff --git a/src/arch/arm/tlb.cc b/src/arch/arm/tlb.cc
index f30e195..2b50d4b 100644
--- a/src/arch/arm/tlb.cc
+++ b/src/arch/arm/tlb.cc
@@ -1418,6 +1418,11 @@
Translation *translation, bool timing, bool functional,
bool is_secure, TLB::ArmTranslationType tranType)
{
+ // In a 2-stage system, the IPA->PA translation can be started via this
+ // call so make sure the miscRegs are correct.
+ if (isStage2) {
+ updateMiscReg(tc, tranType);
+ }
bool is_fetch = (mode == Execute);
bool is_write = (mode == Write);
