Just in case anyone faces this later, this made it work:
diff -r c56647a1bea9 src/cpu/base.cc
--- a/src/cpu/base.cc Thu Sep 17 19:27:07 2015 +0100
+++ b/src/cpu/base.cc Fri Sep 18 11:26:54 2015 +0100
@@ -452,8 +452,10 @@
else
tc->setContextId(system->registerThreadContext(tc));
- if (!FullSystem)
- tc->getProcessPtr()->assignThreadContext(tc->contextId());
+ if (!FullSystem){
+ if(tc->getProcessPtr()!=NULL)
+ tc->getProcessPtr()->assignThreadContext(tc->contextId());
+ }
}
}
diff -r c56647a1bea9 src/cpu/o3/fetch_impl.hh
--- a/src/cpu/o3/fetch_impl.hh Thu Sep 17 19:27:07 2015 +0100
+++ b/src/cpu/o3/fetch_impl.hh Fri Sep 18 11:26:54 2015 +0100
@@ -1144,7 +1144,8 @@
// Start actual fetch
//////////////////////////////////////////
ThreadID tid = getFetchingThread(fetchPolicy);
-
+ if(cpu->getContext(tid)->getProcessPtr()==NULL)
+ return;
assert(!cpu->switchedOut());
if (tid == InvalidThreadID) {
diff -r c56647a1bea9 src/cpu/thread_state.cc
--- a/src/cpu/thread_state.cc Thu Sep 17 19:27:07 2015 +0100
+++ b/src/cpu/thread_state.cc Fri Sep 18 11:26:54 2015 +0100
@@ -118,6 +118,7 @@
virtProxy = new FSTranslatingPortProxy(tc);
} else {
assert(proxy == NULL);
+ if(process!=NULL)
proxy = new SETranslatingPortProxy(baseCpu->getDataPort(),
process,
SETranslatingPortProxy::NextPage);
On 18 September 2015 at 09:57, Jyothish Soman <[email protected]>
wrote:
> Hi,
>
> There is some code in o3 cpu, related to a dummy process for initialising
> a lazy thread, but there is no support for it in any other part of the code
> base. Recommend trimming it out maybe?
> Apologies for double posting, as this falls midway between a user request
> and a bug report.
>
> Best,
> Jyothish
>
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