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hv: make init_vmcs as a event of VCPU

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After changing init_vmcs to smp call approach and do it before
launch_vcpu, it could work with noop scheduler. On real sharing
scheudler, it has problem.

   pcpu0                  pcpu1            pcpu1
 vmBvcpu0                vmAvcpu1         vmBvcpu1
                         vmentry
init_vmcs(vmBvcpu1) vmexit->do_init_vmcs
                    corrupt current vmcs
                        vmentry fail
launch_vcpu(vmBvcpu1)

This patch mark a event flag when request vmcs init for specific vcpu. When
it is running and checking pending events, will do init_vmcs firstly.

Tracked-On: #4178
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Shuo A Liu
2019-10-28 12:03:21 +08:00
committed by wenlingz
parent 15da33d8af
commit 3cb32bb6e3
6 changed files with 19 additions and 20 deletions
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4
hypervisor/common/hv_main.c
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@@ -37,7 +37,7 @@ void vcpu_thread(struct thread_object *obj)
pr_fatal("vcpu handling pending request fail");
pause_vcpu(vcpu, VCPU_ZOMBIE);
/* Fatal error happened (triple fault). Stop the vcpu running. */
schedule();
continue;
}
profiling_vmenter_handler(vcpu);
@@ -48,7 +48,7 @@ void vcpu_thread(struct thread_object *obj)
pr_fatal("vcpu resume failed");
pause_vcpu(vcpu, VCPU_ZOMBIE);
/* Fatal error happened (resume vcpu failed). Stop the vcpu running. */
schedule();
continue;
}
basic_exit_reason = vcpu->arch.exit_reason & 0xFFFFU;
TRACE_2L(TRACE_VM_EXIT, basic_exit_reason, vcpu_get_rip(vcpu));