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target-arm: kvm: save/restore mp state

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This adds the saving and restore of the current Multi-Processing state
of the machine. While the KVM_GET/SET_MP_STATE API exposes a number of
potential states for x86 we only use two for ARM. Either the process is
running or not. We then save this state into the cpu_powered TCG state
to avoid changing the serialisation format.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Alex Bennée 2015-04-01 17:57:30 +01:00 • committed by Peter Maydell
parent 7847f9ea9f
commit 1a1753f747
4 changed files with 69 additions and 0 deletions
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17
target-arm/kvm_arm.h
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@ -162,6 +162,23 @@ typedef struct ARMHostCPUClass {
*/
bool kvm_arm_get_host_cpu_features(ARMHostCPUClass *ahcc);
/**
* kvm_arm_sync_mpstate_to_kvm
* @cpu: ARMCPU
*
* If supported set the KVM MP_STATE based on QEMU's model.
*/
int kvm_arm_sync_mpstate_to_kvm(ARMCPU *cpu);
/**
* kvm_arm_sync_mpstate_to_qemu
* @cpu: ARMCPU
*
* If supported get the MP_STATE from KVM and store in QEMU's model.
*/
int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu);
#endif
#endif