Marcelo Tosatti wrote on 2012-12-21:
> On Mon, Dec 17, 2012 at 01:30:49PM +0800, Yang Zhang wrote:
>> From: Yang Zhang <yang.z.zhang@xxxxxxxxx>
>>
>> @@ -3925,6 +3942,15 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
>> vmx_secondary_exec_control(vmx));
>> }
>> + if (enable_apicv_reg_vid) {
>> + vmcs_write64(EOI_EXIT_BITMAP0, 0);
>> + vmcs_write64(EOI_EXIT_BITMAP1, 0);
>> + vmcs_write64(EOI_EXIT_BITMAP2, 0);
>> + vmcs_write64(EOI_EXIT_BITMAP3, 0);
>> +
>> + vmcs_write16(GUEST_INTR_STATUS, 0);
>> + }
>
> AFAICS SVI should be regenerated on migration. Consider:
>
> 1. vintr delivery, sets SVI = vector = RVI.
> 2. clears RVI.
> 3. migration.
> 4. RVI properly set from VIRR on entry.
> 5. SVI = 0.
> 6. EOI -> EOI virtualization with SVI = 0.
>
> Could hook into kvm_apic_post_state_restore() to do that (set highest
> index of bit set in VISR).
Ok. How about to make a request(KVM_REQ_UPDATE_SVI) and handle it in vmentry to set highest index of bit in VISR to RVI.
Best regards,
Yang
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