diff options
Diffstat (limited to 'src/cpu/kvm/base.hh')
| -rw-r--r-- | src/cpu/kvm/base.hh | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/cpu/kvm/base.hh b/src/cpu/kvm/base.hh index 8191d9d92..b987f6a3e 100644 --- a/src/cpu/kvm/base.hh +++ b/src/cpu/kvm/base.hh @@ -40,8 +40,10 @@ #ifndef __CPU_KVM_BASE_HH__ #define __CPU_KVM_BASE_HH__ -#include <memory> +#include <pthread.h> + #include <csignal> +#include <memory> #include "base/statistics.hh" #include "cpu/kvm/perfevent.hh" @@ -50,11 +52,8 @@ #include "cpu/base.hh" #include "cpu/simple_thread.hh" -/** Signal to use to trigger time-based exits from KVM */ -#define KVM_TIMER_SIGNAL SIGRTMIN - -/** Signal to use to trigger instruction-based exits from KVM */ -#define KVM_INST_SIGNAL (SIGRTMIN+1) +/** Signal to use to trigger exits from KVM */ +#define KVM_KICK_SIGNAL SIGRTMIN // forward declarations class ThreadContext; @@ -115,6 +114,14 @@ class BaseKvmCPU : public BaseCPU virtual void dump(); /** + * Force an exit from KVM. + * + * Send a signal to the thread owning this vCPU to get it to exit + * from KVM. Ignored if the vCPU is not executing. + */ + void kick() const { pthread_kill(vcpuThread, KVM_KICK_SIGNAL); } + + /** * A cached copy of a thread's state in the form of a SimpleThread * object. * @@ -585,6 +592,9 @@ class BaseKvmCPU : public BaseCPU /** KVM internal ID of the vCPU */ const long vcpuID; + /** ID of the vCPU thread */ + pthread_t vcpuThread; + private: struct TickEvent : public Event { |