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| author | Andreas Hansson <andreas.hansson@arm.com> | 2015-02-16 03:33:47 -0500 |
|---|---|---|
| committer | Andreas Hansson <andreas.hansson@arm.com> | 2015-02-16 03:33:47 -0500 |
| commit | e17328a227a47089e6f3c8fd82cc988f03807549 (patch) | |
| tree | c78336b4caff2c1ab31180efdd4c8298c890aee6 /src/sim/system.cc | |
| parent | 57758ca685fe1a736cfdc214785b04441e83e53a (diff) | |
| download | gem5-e17328a227a47089e6f3c8fd82cc988f03807549.tar.xz | |
mem: mmap the backing store with MAP_NORESERVE
This patch ensures we can run simulations with very large simulated
memories (at least 64 TB based on some quick runs on a Linux
workstation). In essence this allows us to efficiently deal with
sparse address maps without having to implement a redirection layer in
the backing store.
This opens up for run-time errors if we eventually exhausts the hosts
memory and swap space, but this should hopefully never happen.
Diffstat (limited to 'src/sim/system.cc')
| -rw-r--r-- | src/sim/system.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sim/system.cc b/src/sim/system.cc index c311d65b9..9bd487b03 100644 --- a/src/sim/system.cc +++ b/src/sim/system.cc @@ -88,7 +88,7 @@ System::System(Params *p) loadAddrMask(p->load_addr_mask), loadAddrOffset(p->load_offset), nextPID(0), - physmem(name() + ".physmem", p->memories), + physmem(name() + ".physmem", p->memories, p->mmap_using_noreserve), memoryMode(p->mem_mode), _cacheLineSize(p->cache_line_size), workItemsBegin(0), |