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| author | Andreas Sandberg <andreas.sandberg@arm.com> | 2016-03-30 10:52:25 +0100 |
|---|---|---|
| committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2016-03-30 10:52:25 +0100 |
| commit | a3efb6bd1d0d83297b5b412badc0b7db98b7be1e (patch) | |
| tree | 424147084794cefe47a22b53758bfb538d1bc16e /src/cpu/kvm/BaseKvmCPU.py | |
| parent | d4eb354e30171c8c1d65c7158eb05369be6c5e2e (diff) | |
| download | gem5-a3efb6bd1d0d83297b5b412badc0b7db98b7be1e.tar.xz | |
kvm: Add an option to force context sync on kvm entry/exit
This changeset adds an option to force the kvm-based CPUs to always
synchronize the gem5 thread context representation on entry/exit into
the kernel. This is very useful for debugging. Unfortunately, it is
also the only way to get reliable register contents when using remote
gdb functionality. The long-term solution for the latter would be to
implement a kvm-specific thread context.
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Alexandru Dutu <alexandru.dutu@amd.com>
Diffstat (limited to 'src/cpu/kvm/BaseKvmCPU.py')
| -rw-r--r-- | src/cpu/kvm/BaseKvmCPU.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/cpu/kvm/BaseKvmCPU.py b/src/cpu/kvm/BaseKvmCPU.py index b7c964669..34ab752de 100644 --- a/src/cpu/kvm/BaseKvmCPU.py +++ b/src/cpu/kvm/BaseKvmCPU.py @@ -71,6 +71,8 @@ class BaseKvmCPU(BaseCPU): kvmVM = Param.KvmVM(Parent.any, 'KVM VM (i.e., shared memory domain)') useCoalescedMMIO = Param.Bool(False, "Use coalesced MMIO (EXPERIMENTAL)") usePerfOverflow = Param.Bool(False, "Use perf event overflow counters (EXPERIMENTAL)") + alwaysSyncTC = Param.Bool(False, + "Always sync thread contexts on entry/exit") hostFreq = Param.Clock("2GHz", "Host clock frequency") hostFactor = Param.Float(1.0, "Cycle scale factor") |