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hv:fix rtvm hang with maxcpus=0/1 in bootargs

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RTVM (with lapic PT) boots hang when maxcpus is
 assigned a value less than the CPU number configured
 in hypervisor.

 In this case, vlapic_state(per VM) is left in TRANSITION
 state after BSP boot, which blocks interupts to be injected
 to this UOS.

Tracked-On: #4803
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Reviewed-by: Li, Fei <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang
2020-05-11 15:16:30 +08:00
committed by wenlingz
parent 4d3221a7f3
commit 3391bffb27
4 changed files with 43 additions and 17 deletions
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11
hypervisor/include/arch/x86/guest/vcpu.h
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@@ -715,6 +715,17 @@ bool is_lapic_pt_enabled(struct acrn_vcpu *vcpu);
* @return None
*/
void vcpu_handle_pi_notification(uint32_t vcpu_index);
/*
* @brief Update the state of vCPU and state of vlapic
*
* The vlapic state of VM shall be updated for some vCPU
* state update cases, such as from VCPU_INIT to VCPU_RUNNING.
* @pre (vcpu != NULL)
*/
void vcpu_set_state(struct acrn_vcpu *vcpu, enum vcpu_state new_state);
/**
* @}
*/