Paolo Bonzini writes:
> On 07/01/20 13:08, Vitaly Kuznetsov wrote:
>> Honestly I forgot the story why we filtered out these features upon
>> eVMCS enablement in KVM. As there are no corresponding eVMCS fields,
>> there's no way a guest can actually use them.
>
> Well, mostly because we mimicked w
Paolo Bonzini writes:
> SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES
>>
>> the problem with it is that we don't have 'apic_access_addr' field in
>> eVMCS ('virtual_apic_page_addr' is there). By running the same setup
>> with eVMCS disabled I figured out which address can be hardcoded to make
>> it boo
SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES
>
> the problem with it is that we don't have 'apic_access_addr' field in
> eVMCS ('virtual_apic_page_addr' is there). By running the same setup
> with eVMCS disabled I figured out which address can be hardcoded to make
> it boot.
>
Maybe it's really hard co
Paolo Bonzini writes:
> On 07/01/20 13:08, Vitaly Kuznetsov wrote:
>> Honestly I forgot the story why we filtered out these features upon
>> eVMCS enablement in KVM. As there are no corresponding eVMCS fields,
>> there's no way a guest can actually use them.
>
> Well, mostly because we mimicked w
On 07/01/20 13:08, Vitaly Kuznetsov wrote:
> Honestly I forgot the story why we filtered out these features upon
> eVMCS enablement in KVM. As there are no corresponding eVMCS fields,
> there's no way a guest can actually use them.
Well, mostly because we mimicked what Hyper-V was doing I guess.
Paolo Bonzini writes:
> On 02/01/20 21:39, Vitaly Kuznetsov wrote:
>> When enlightened VMCS is enabled, certain VMX controls disappear, e.g.
>> posted interrupts for PINBASED_CTLS. With fine-grained VMX feature
>> enablement QEMU tries to do KVM_SET_MSRS with default (matching CPU
>> model) value
On 02/01/20 21:39, Vitaly Kuznetsov wrote:
> When enlightened VMCS is enabled, certain VMX controls disappear, e.g.
> posted interrupts for PINBASED_CTLS. With fine-grained VMX feature
> enablement QEMU tries to do KVM_SET_MSRS with default (matching CPU
> model) values and fails as KVM doesn't all
When enlightened VMCS is enabled, certain VMX controls disappear, e.g.
posted interrupts for PINBASED_CTLS. With fine-grained VMX feature
enablement QEMU tries to do KVM_SET_MSRS with default (matching CPU
model) values and fails as KVM doesn't allow to set now-unsupported
controls.
The ideal solu
