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| author | Andreas Sandberg <andreas.sandberg@arm.com> | 2017-04-24 16:38:46 +0000 |
|---|---|---|
| committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2017-07-07 10:11:16 +0000 |
| commit | feb91ce576f2da6e1941697100d14bc10ace6a90 (patch) | |
| tree | 6af40ee5970c4234f29c3a69c31fe2fe246d5017 /src/cpu | |
| parent | 166da650a3c864b31193ade893ed99e547c67644 (diff) | |
| download | gem5-feb91ce576f2da6e1941697100d14bc10ace6a90.tar.xz | |
kvm, arm: Don't forward IRQ/FIQ when using the kernel's GIC
The BaseArmKvmCPU is responsible for forwarding the IRQ and FIQ
signals from gem5's simulated GIC to KVM. However, these signals
shouldn't be used when the in-kernel GIC emulator is used.
Instead of delivering the interrupts to the guest, we should just
ignore them since any such pending interrupts are likely to be an
artifact of CPU switching or incorrect draining.
Change-Id: I083b72639384272157f92f44a6606bdf0be7413c
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Sudhanshu Jha <sudhanshu.jha@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/3660
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/kvm/vm.hh | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cpu/kvm/vm.hh b/src/cpu/kvm/vm.hh index df2e4119a..e122bbf86 100644 --- a/src/cpu/kvm/vm.hh +++ b/src/cpu/kvm/vm.hh @@ -351,6 +351,15 @@ class KvmVM : public SimObject * Is in-kernel IRQ chip emulation enabled? */ bool hasKernelIRQChip() const { return _hasKernelIRQChip; } + + /** + * Tell the VM and VCPUs to use an in-kernel IRQ chip for + * interrupt delivery. + * + * @note This is set automatically if the IRQ chip is created + * using the KvmVM::createIRQChip() API. + */ + void enableKernelIRQChip() { _hasKernelIRQChip = true; } /** @} */ struct MemSlot |