Victor Soria has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/35295 )
Change subject: cpu-o3: Add Data Abort handler for Atomic Instructions
......................................................................
cpu-o3: Add Data Abort handler for Atomic Instructions
Change-Id: I79e7113efd8157fba61b6d4a0b0c09bc6f85ec29
---
M src/cpu/o3/lsq_unit_impl.hh
1 file changed, 12 insertions(+), 0 deletions(-)
diff --git a/src/cpu/o3/lsq_unit_impl.hh b/src/cpu/o3/lsq_unit_impl.hh
index 808a671..6fd33a4 100644
--- a/src/cpu/o3/lsq_unit_impl.hh
+++ b/src/cpu/o3/lsq_unit_impl.hh
@@ -708,6 +708,18 @@
DPRINTF(LSQUnit,"Fault on Store PC %s, [sn:%lli], Size = 0\n",
store_inst->pcState(), store_inst->seqNum);
+ // If the instruction is atomic and had a fault then it may not
have a mem req
+ if (store_inst->isAtomic()) {
+ // If the instruction faulted, then we need to send it along
+ // to commit without the instruction completing.
+ if (!(store_inst->hasRequest() &&
store_inst->strictlyOrdered()) ||
+ store_inst->isAtCommit()) {
+ store_inst->setExecuted();
+ }
+ iewStage->instToCommit(store_inst);
+ iewStage->activityThisCycle();
+ }
+
return store_fault;
}
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I79e7113efd8157fba61b6d4a0b0c09bc6f85ec29
Gerrit-Change-Number: 35295
Gerrit-PatchSet: 1
Gerrit-Owner: Victor Soria <victor.so...@bsc.es>
Gerrit-MessageType: newchange
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