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mem-cache: pstAddress should be inserted into PST in STeMS

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Change-Id: Ib2c4c5fb0fec32e63947d3ee8dcb5c3d7e2555ab
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/55084
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Jiasen Huang
2021-12-31 15:55:45 +08:00
committed by Huang Jiasen
parent ec58d9d7f3
commit 66e6e59666
1 changed files with 6 additions and 3 deletions
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9
src/mem/cache/prefetch/spatio_temporal_memory_streaming.cc vendored
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@@ -74,6 +74,7 @@ STeMS::checkForActiveGenerationsEnd()
if (agt_entry.isValid()) {
bool generation_ended = false;
bool sr_is_secure = agt_entry.isSecure();
Addr pst_addr = 0;
for (auto &seq_entry : agt_entry.sequence) {
if (seq_entry.counter > 0) {
Addr cache_addr =
@@ -81,6 +82,8 @@ STeMS::checkForActiveGenerationsEnd()
if (!inCache(cache_addr, sr_is_secure) &&
!inMissQueue(cache_addr, sr_is_secure)) {
generation_ended = true;
pst_addr = (agt_entry.pc << spatialRegionSizeBits)
+ seq_entry.offset;
break;
}
}
@@ -88,13 +91,13 @@ STeMS::checkForActiveGenerationsEnd()
if (generation_ended) {
// PST is indexed using the PC (secure bit is unused)
ActiveGenerationTableEntry *pst_entry =
patternSequenceTable.findEntry(agt_entry.pc,
patternSequenceTable.findEntry(pst_addr,
false /*unused*/);
if (pst_entry == nullptr) {
// Tipically an entry will not exist
pst_entry = patternSequenceTable.findVictim(agt_entry.pc);
pst_entry = patternSequenceTable.findVictim(pst_addr);
assert(pst_entry != nullptr);
patternSequenceTable.insertEntry(agt_entry.pc,
patternSequenceTable.insertEntry(pst_addr,
false /*unused*/, pst_entry);
} else {
patternSequenceTable.accessEntry(pst_entry);