On Wed, Jan 28, 2015 at 4:05 PM, Zhang, Yang Z wrote:
>> @@ -8344,7 +8394,68 @@ static int
>> nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu, static
>> inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu,
>>struct vmcs12
>> *vm
On Wed, Jan 28, 2015 at 8:33 PM, Zhang, Yang Z wrote:
>>>
>>> You are right, but this is not fit for all the cases, we should
>>> custom the nested_msr_bitmap.
>>> e.g. Currently L0 wants to intercept some of the x2apic msrs' reading:
>>> if (enable_apicv) {
>>> for (msr
On Wed, Jan 28, 2015 at 4:00 PM, Zhang, Yang Z wrote:
>> @@ -5812,13 +5813,18 @@ static __init int hardware_setup(void)
>> (unsigned long
>> *)__get_free_page(GFP_KERNEL);
>> if (!vmx_msr_bitmap_longmode_x2apic)
>> goto out4;
>> +
>> +
Wincy Van wrote on 2015-01-28:
> On Wed, Jan 28, 2015 at 7:25 PM, Zhang, Yang Z
> wrote:
>> Wincy Van wrote on 2015-01-28:
>>> On Wed, Jan 28, 2015 at 4:05 PM, Zhang, Yang Z
>>>
>>> wrote:
> @@ -8344,7 +8394,68 @@ static int
> nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu, st
Wincy Van wrote on 2015-01-24:
> When L2 is using x2apic, we can use virtualize x2apic mode to gain higher
> performance, especially in apicv case.
>
> This patch also introduces nested_vmx_check_apicv_controls for the nested
> apicv patches.
>
> Signed-off-by: Wincy Van
> ---
...snip...
> st
Wincy Van wrote on 2015-01-28:
> On Wed, Jan 28, 2015 at 8:33 PM, Zhang, Yang Z
> wrote:
You are right, but this is not fit for all the cases, we should
custom the nested_msr_bitmap.
e.g. Currently L0 wants to intercept some of the x2apic msrs' reading:
if (enab
On Wed, Jan 28, 2015 at 9:06 PM, Zhang, Yang Z wrote:
__clear_bit(msr, msr_bitmap_nested + 0x000 / f);
>>>
>>>
>>> Anyway, this is not necessary for your current patch. We can consider
>>> it later if there really have other features will use it.
>>>
>>
>> Yep, I know what you mean no
Wincy Van wrote on 2015-01-28:
> On Wed, Jan 28, 2015 at 7:52 PM, Zhang, Yang Z
> wrote:
>>>
>>> If L0 wants to intercept a msr, we should set
>>> vmx_msr_bitmap_legacy(_x2apic) and vmx_msr_bitmap_longmode(_x2apic),
>>> and that bitmaps should only be loaded in non-nested entry. Currently
>
Wincy Van wrote on 2015-01-28:
> On Wed, Jan 28, 2015 at 4:05 PM, Zhang, Yang Z
> wrote:
>>> @@ -8344,7 +8394,68 @@ static int
>>> nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu, static
>>> inline bool nested_vmx_merge_msr_bitmap(struct kvm_vcpu *vcpu,
>>>
Zhang, Yang Z wrote on 2015-01-28:
> Wincy Van wrote on 2015-01-28:
>> On Wed, Jan 28, 2015 at 7:52 PM, Zhang, Yang Z
>>
>> wrote:
>
If L0 wants to intercept a msr, we should set
vmx_msr_bitmap_legacy(_x2apic) and vmx_msr_bitmap_longmode(_x2apic),
and that bitmaps should
On Wed, Jan 28, 2015 at 7:52 PM, Zhang, Yang Z wrote:
>>>
>>
>> If L0 wants to intercept a msr, we should set
>> vmx_msr_bitmap_legacy(_x2apic) and vmx_msr_bitmap_longmode(_x2apic),
>> and that bitmaps should only be loaded in non-nested entry.
>> Currently we only clear the corresponding bits if
Wincy Van wrote on 2015-01-28:
> On Wed, Jan 28, 2015 at 4:00 PM, Zhang, Yang Z
> wrote:
>>> @@ -5812,13 +5813,18 @@ static __init int hardware_setup(void)
>>> (unsigned long
>>> *)__get_free_page(GFP_KERNEL);
>>> if (!vmx_msr_bitmap_longmode_x2apic)
>>>
Wincy Van wrote on 2015-01-24:
> Currently, if L1 enables MSR_BITMAP, we will emulate this feature, all of L2's
> msr access is intercepted by L0. Since many features like virtualize x2apic
> mode
> has a complicated logic and it is difficult for us to emulate, we should use
> hardware and merge t
Zhang, Yang Z wrote on 2015-01-28:
> Wincy Van wrote on 2015-01-24:
>> When L2 is using x2apic, we can use virtualize x2apic mode to gain
>> higher performance, especially in apicv case.
>>
>> This patch also introduces nested_vmx_check_apicv_controls for the
>> nested apicv patches.
Sorry, repli
On Wed, Jan 28, 2015 at 7:25 PM, Zhang, Yang Z wrote:
> Wincy Van wrote on 2015-01-28:
>> On Wed, Jan 28, 2015 at 4:05 PM, Zhang, Yang Z
>> wrote:
@@ -8344,7 +8394,68 @@ static int
nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu, static
inline bool nested_vmx_merge_msr_
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