diff options
| author | Alexander Graf <agraf@suse.de> | 2017-07-11 11:21:26 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-07-11 11:21:26 +0100 |
| commit | 5d721b785fbe80170fc756e9444cf751d3a47568 (patch) | |
| tree | bfd169dc02c4d5550e1714e436eff3174817a0be /accel | |
| parent | f986ee1d43004a336197ee012e901f44bba04785 (diff) | |
ARM: KVM: Enable in-kernel timers with user space gic
When running with KVM enabled, you can choose between emulating the
gic in kernel or user space. If the kernel supports in-kernel virtualization
of the interrupt controller, it will default to that. If not, if will
default to user space emulation.
Unfortunately when running in user mode gic emulation, we miss out on
interrupt events which are only available from kernel space, such as the timer.
This patch leverages the new kernel/user space pending line synchronization for
timer events. It does not handle PMU events yet.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 1498577737-130264-1-git-send-email-agraf@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'accel')
| -rw-r--r-- | accel/kvm/kvm-all.c | 5 | ||||
| -rw-r--r-- | accel/stubs/kvm-stub.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 2eef7daa01..46ce479dc3 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -2274,6 +2274,11 @@ int kvm_has_intx_set_mask(void) return kvm_state->intx_set_mask; } +bool kvm_arm_supports_user_irq(void) +{ + return kvm_check_extension(kvm_state, KVM_CAP_ARM_USER_IRQ); +} + #ifdef KVM_CAP_SET_GUEST_DEBUG struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, target_ulong pc) diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c index ef0c7346af..3965c528d3 100644 --- a/accel/stubs/kvm-stub.c +++ b/accel/stubs/kvm-stub.c @@ -155,4 +155,9 @@ void kvm_init_cpu_signals(CPUState *cpu) { abort(); } + +bool kvm_arm_supports_user_irq(void) +{ + return false; +} #endif |