Dear developers,
I previous versions, there was a check in prefetcher code
if (!pkt->req->hasPC()) {
DPRINTF(HWPrefetch, "ignoring request with no PC");
return;
}
which prevent prefetching when the packet has no PC. However in the
latest version, that check is removed in the tagged prefetcher. Stride
is ok though.
So the simulation crashes with this backtrace:
#0 0x00007ffff67993a5 in __GI_raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007ffff679cb0b in __GI_abort () at abort.c:92
#2 0x00007ffff6791d4d in __GI___assert_fail (assertion=0x150fb30
"privateFlags.isSet(VALID_THREAD_ID)", file=<optimized out>, line=467,
function=<optimized out>) at assert.c:81
#3 0x00000000005fee66 in Request::threadId (this=0x3d39fe0) at
build/X86/mem/request.hh:467
#4 0x00000000005fde07 in BasePrefetcher::notify (this=0x3091880,
pkt=@0x7fffffffc390, time=1958221000) at
build/X86/mem/cache/prefetch/base.cc:239
#5 0x00000000005e6316 in Cache<LRU>::timingAccess (this=0x30c4340,
pkt=0x3d39f80) at build/X86/mem/cache/cache_impl.hh:499
m5.debug: build/X86/mem/request.hh:467: int Request::threadId() const:
Assertion `privateFlags.isSet(VALID_THREAD_ID)' failed.
I think the check must be added in tagged too.
--
// Naderan *Mahmood;
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