On Fri, Apr 21, 2017 at 10:00:16PM +0800, Tian, Kevin wrote:
>btw I'm thinking whether adding lock in vmx_intr_assist is
>necessary... Can you think whether below option may
>work?
>
>Do lock protection within pt_update_irq. Make sure vector
>not changed between setting vIRR and finding pt_irq_vect
> From: Gao, Chao
> Sent: Friday, April 21, 2017 12:23 PM
>
> >> @@ -487,13 +494,14 @@ int vpic_ack_pending_irq(struct vcpu *v)
> >> struct hvm_hw_vpic *vpic = &v->domain->arch.hvm_domain.vpic[0];
> >>
> >> ASSERT(has_vpic(v->domain));
> >> +ASSERT(vpic_is_locked(vpic));
> >>
> >>
Kevin, thanks for your reply.
On Fri, Apr 21, 2017 at 06:56:39PM +0800, Tian, Kevin wrote:
>> From: Gao, Chao
>> Sent: Friday, April 7, 2017 11:24 AM
>>
>> When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
>> operation is operated during one event delivery and incur to i
> From: Gao, Chao
> Sent: Friday, April 7, 2017 11:24 AM
>
> When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
> operation is operated during one event delivery and incur to inconsistent
operation is operated -> operations are done
> views of vIOAPIC. For example, if a
>>> On 21.04.17 at 04:42, wrote:
> PING...
>
> Please give some comments. I think this bug should be fixed in Xen 4.9.
I'm sorry, you've posted this as an RFC, which sits behind 80 other
RFCs which want looking at, which in turn sit behind some 30 non-RFCs
for 4.10. If you intend something for 4
PING...
Please give some comments. I think this bug should be fixed in Xen 4.9.
On Fri, Apr 07, 2017 at 11:24:16AM +0800, Chao Gao wrote:
>When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
>operation is operated during one event delivery and incur to inconsistent
>views
On Wed, Apr 12, 2017 at 02:45:36AM +, Xuquan (Quan Xu) wrote:
>On April 07, 2017 11:24 AM, Chao Gao wrote:
>>When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
>>operation is operated during one event delivery and incur to inconsistent
>>views of vIOAPIC. For example, i
On Wed, Apr 12, 2017 at 02:45:36AM +, Xuquan (Quan Xu) wrote:
>On April 07, 2017 11:24 AM, Chao Gao wrote:
>>When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
>>operation is operated during one event delivery and incur to inconsistent
>>views of vIOAPIC. For example, i
On April 07, 2017 11:24 AM, Chao Gao wrote:
>When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
>operation is operated during one event delivery and incur to inconsistent
>views of vIOAPIC. For example, if a periodic timer interrupt is from PIT, when
>set the corresponding
When injecting periodic timer interrupt in vmx_intr_assist(), multiple read
operation is operated during one event delivery and incur to inconsistent
views of vIOAPIC. For example, if a periodic timer interrupt is from PIT, when
set the corresponding bit in vIRR, the corresponding RTE is accessed i
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