From d47fc420ca941c9bcdf025f254ec1d20e54034f9 Mon Sep 17 00:00:00 2001 From: John Baldwin Date: Mon, 21 Jul 2014 02:39:17 +0000 Subject: MFC 263780,264516,265062,265101,265203,265364: Add an ioctl to suspend a virtual machine (VM_SUSPEND). Add logic in the HLT exit handler to detect if the guest has put all vcpus to sleep permanently by executing a HLT with interrupts disabled. When this condition is detected the guest with be suspended with a reason of VM_SUSPEND_HALT and the bhyve(8) process will exit. This logic can be disabled via the tunable 'hw.vmm.halt_detection'. --- lib/libvmmapi/vmmapi.c | 10 ++++++++++ lib/libvmmapi/vmmapi.h | 1 + 2 files changed, 11 insertions(+) (limited to 'lib/libvmmapi') diff --git a/lib/libvmmapi/vmmapi.c b/lib/libvmmapi/vmmapi.c index 22b536a104ee..4a7f852c6ffc 100644 --- a/lib/libvmmapi/vmmapi.c +++ b/lib/libvmmapi/vmmapi.c @@ -342,6 +342,16 @@ vm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *vmexit) return (error); } +int +vm_suspend(struct vmctx *ctx, enum vm_suspend_how how) +{ + struct vm_suspend vmsuspend; + + bzero(&vmsuspend, sizeof(vmsuspend)); + vmsuspend.how = how; + return (ioctl(ctx->fd, VM_SUSPEND, &vmsuspend)); +} + static int vm_inject_exception_real(struct vmctx *ctx, int vcpu, int vector, int error_code, int error_code_valid) diff --git a/lib/libvmmapi/vmmapi.h b/lib/libvmmapi/vmmapi.h index f8921d3bfa49..2a2ca6b7f9dc 100644 --- a/lib/libvmmapi/vmmapi.h +++ b/lib/libvmmapi/vmmapi.h @@ -61,6 +61,7 @@ int vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val); int vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *retval); int vm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *ret_vmexit); +int vm_suspend(struct vmctx *ctx, enum vm_suspend_how how); int vm_apicid2vcpu(struct vmctx *ctx, int apicid); int vm_inject_exception(struct vmctx *ctx, int vcpu, int vec); int vm_inject_exception2(struct vmctx *ctx, int vcpu, int vec, int errcode); -- cgit v1.3