lkml.org 
[lkml]   [2017]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH V13 10/10] arm/arm64: KVM: add guest SEA support
From
Date
Hello,


On 3/28/2017 3:53 AM, gengdongjiu wrote:
> Hi,
>
> On 2017/3/22 6:47, Tyler Baicar wrote:
>> + fault_ipa = kvm_vcpu_get_fault_ipa(vcpu);
>> +
>> + /* The host kernel will handle the synchronous external abort. There
>> + * is no need to pass the error into the guest.
>> + */
>> + if (is_abort_synchronous(fault_status))
>> + sea_status = handle_guest_sea((unsigned long)fault_ipa,
>> + kvm_vcpu_get_hsr(vcpu));
>>
>> is_iabt = kvm_vcpu_trap_is_iabt(vcpu);
>> - if (unlikely(!is_iabt && kvm_vcpu_dabt_isextabt(vcpu))) {
>> + if (unlikely(!is_iabt && kvm_vcpu_dabt_isextabt(vcpu)) && sea_status) {
>> kvm_inject_vabt(vcpu);
>> return 1;
>> }
> After the host kernel correctly handle the synchronous external abort, the sea_status
> will return 0, so the code logical will be continue go-no, whether it is better directly return
> after correctly handle the SEA? such as below.
>
> if (unlikely(!is_iabt && kvm_vcpu_dabt_isextabt(vcpu)) && sea_status) {
> kvm_inject_vabt(vcpu);
> return 1;
> } else
> return 1;
Yes, I will return after successful SEA handling in the next patch set.

Thanks,
Tyler
>
>>
>> - fault_ipa = kvm_vcpu_get_fault_ipa(vcpu);
>> -
>> trace_kvm_guest_fault(*vcpu_pc(vcpu), kvm_vcpu_get_hsr(vcpu),
>> kvm_vcpu_get_hfar(vcpu), fault_ipa);
>>
>> - /* Check the stage-2 fault is trans. fault or write fault */
>> - fault_status = kvm_vcpu_trap_get_fault_type(vcpu);
>> if (fault_status != FSC_FAULT && fault_status != FSC_PERM &&

--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

\
 
 \ /
  Last update: 2017-03-28 18:48    [W:0.197 / U:0.424 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site