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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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3
hypervisor/arch/x86/guest/vlapic.c
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@@ -1192,8 +1192,7 @@ vlapic_process_init_sipi(struct acrn_vcpu* target_vcpu, uint32_t mode, uint32_t
target_vcpu->vcpu_id,
target_vcpu->vm->vm_id);
set_vcpu_startup_entry(target_vcpu, (icr_low & APIC_VECTOR_MASK) << 12U);
/* init vmcs after set_vcpu_startup_entry */
init_vmcs(target_vcpu);
vcpu_make_request(target_vcpu, ACRN_REQUEST_INIT_VMCS);
launch_vcpu(target_vcpu);
}
}