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author | Iru Cai <mytbk920423@gmail.com> | 2019-02-28 17:07:16 +0800 |
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committer | Iru Cai <mytbk920423@gmail.com> | 2019-03-20 21:51:26 +0800 |
commit | 592d2c8bb63714be979ccc0286607c63b444d139 (patch) | |
tree | 06a9bbef8c336b7a52964adaf050645f826d2bc8 /src/arch/arm | |
parent | 866b200c202dded37fdd857a1a42ec149bd109c9 (diff) | |
download | gem5-592d2c8bb63714be979ccc0286607c63b444d139.tar.xz |
invisispec-1.0 source
Diffstat (limited to 'src/arch/arm')
-rw-r--r-- | src/arch/arm/tlb.cc | 16 | ||||
-rw-r--r-- | src/arch/arm/tlb.hh | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/src/arch/arm/tlb.cc b/src/arch/arm/tlb.cc index 46056d07b..25e210b55 100644 --- a/src/arch/arm/tlb.cc +++ b/src/arch/arm/tlb.cc @@ -539,6 +539,11 @@ TLB::regStats() .name(name() + ".prefetch_faults") .desc("Number of TLB faults due to prefetch") ; + + specTLBMisses + .name(name() + ".spec_tlb_misses") + .desc("Number of TLB misses from a speculative mem instructions") + ; domainFaults .name(name() + ".domain_faults") @@ -1434,6 +1439,17 @@ TLB::getTE(TlbEntry **te, const RequestPtr &req, ThreadContext *tc, Mode mode, vaddr_tainted, ArmFault::PrefetchTLBMiss, isStage2); } + if (req->isSpec()) { + // if the request is a prefetch don't attempt to fill the TLB or go + // any further with the memory access (here we can safely use the + // fault status for the short desc. format in all cases) + specTLBMisses++; + //FIXME: currently resue the prefetch tlbmiss fault + //do not want to introduce new fault declaration + return std::make_shared<PrefetchAbort>( + vaddr_tainted, ArmFault::PrefetchTLBMiss, isStage2); + } + if (is_fetch) instMisses++; else if (is_write) diff --git a/src/arch/arm/tlb.hh b/src/arch/arm/tlb.hh index 637240abb..862a48380 100644 --- a/src/arch/arm/tlb.hh +++ b/src/arch/arm/tlb.hh @@ -181,6 +181,7 @@ class TLB : public BaseTLB mutable Stats::Scalar flushedEntries; mutable Stats::Scalar alignFaults; mutable Stats::Scalar prefetchFaults; + mutable Stats::Scalar specTLBMisses; mutable Stats::Scalar domainFaults; mutable Stats::Scalar permsFaults; |