From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>, kvm@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>,
Maxim Levitsky <mlevitsk@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/7] KVM: nVMX: Introduce nested_evmcs_is_used()
Date: Mon, 24 May 2021 16:37:59 +0200 [thread overview]
Message-ID: <87lf848aew.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <37a6d13d-58ae-65e1-75f9-681a40d819a1@redhat.com>
Paolo Bonzini <pbonzini@redhat.com> writes:
> On 24/05/21 16:09, Vitaly Kuznetsov wrote:
>> You mean we'll be using:
>>
>> "hv_evmcs_ptr == 0" meaning "no evmcs" (like now)
>> "hv_evmcs_ptr == -1" meaing "evmcs not yet mapped" (and
>> nested_evmcs_is_used() will check for both '0' and '-1')
>> "hv_evmcs_ptr == anything else" - eVMCS mapped.
>
> I was thinking of:
>
> hv_evmcs_ptr == -1 meaning no evmcs
>
> hv_evmcs == NULL meaning "evmcs not yet mapped" (I think)
>
> hv_evmcs != NULL meaning "evmcs mapped".
>
> As usual with my suggestions, I'm not sure if this makes sense :) but if
> it does, the code should be nicer.
Ok, let me try this!
--
Vitaly
next prev parent reply other threads:[~2021-05-24 14:38 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 13:50 [PATCH v2 0/7] KVM: nVMX: Fixes for nested state migration when eVMCS is in use Vitaly Kuznetsov
2021-05-17 13:50 ` [PATCH v2 1/7] KVM: nVMX: Introduce nested_evmcs_is_used() Vitaly Kuznetsov
2021-05-24 12:11 ` Maxim Levitsky
2021-05-24 12:35 ` Vitaly Kuznetsov
2021-05-26 14:34 ` Maxim Levitsky
2021-05-27 7:54 ` Vitaly Kuznetsov
2021-05-27 14:10 ` Maxim Levitsky
2021-05-24 13:54 ` Paolo Bonzini
2021-05-24 14:09 ` Vitaly Kuznetsov
2021-05-24 14:18 ` Paolo Bonzini
2021-05-24 14:37 ` Vitaly Kuznetsov [this message]
2021-05-17 13:50 ` [PATCH v2 2/7] KVM: nVMX: Release enlightened VMCS on VMCLEAR Vitaly Kuznetsov
2021-05-24 12:13 ` Maxim Levitsky
2021-05-17 13:50 ` [PATCH v2 3/7] KVM: nVMX: Ignore 'hv_clean_fields' data when eVMCS data is copied in vmx_get_nested_state() Vitaly Kuznetsov
2021-05-24 12:26 ` Maxim Levitsky
2021-05-24 13:01 ` Vitaly Kuznetsov
2021-05-24 13:58 ` Paolo Bonzini
2021-05-26 14:44 ` Maxim Levitsky
2021-05-24 13:56 ` Paolo Bonzini
2021-05-24 14:12 ` Vitaly Kuznetsov
2021-05-17 13:50 ` [PATCH v2 4/7] KVM: nVMX: Force enlightened VMCS sync from nested_vmx_failValid() Vitaly Kuznetsov
2021-05-24 12:27 ` Maxim Levitsky
2021-05-17 13:50 ` [PATCH v2 5/7] KVM: nVMX: Reset eVMCS clean fields data from prepare_vmcs02() Vitaly Kuznetsov
2021-05-24 12:34 ` Maxim Levitsky
2021-05-24 13:07 ` Vitaly Kuznetsov
2021-05-17 13:50 ` [PATCH v2 6/7] KVM: nVMX: Request to sync eVMCS from VMCS12 after migration Vitaly Kuznetsov
2021-05-24 12:35 ` Maxim Levitsky
2021-05-17 13:50 ` [PATCH v2 7/7] KVM: selftests: evmcs_test: Test that KVM_STATE_NESTED_EVMCS is never lost Vitaly Kuznetsov
2021-05-24 12:36 ` Maxim Levitsky
2021-05-24 12:08 ` [PATCH v2 0/7] KVM: nVMX: Fixes for nested state migration when eVMCS is in use Maxim Levitsky
2021-05-24 12:44 ` Vitaly Kuznetsov
2021-05-26 14:41 ` Maxim Levitsky
2021-05-27 8:01 ` Vitaly Kuznetsov
2021-05-27 14:11 ` Maxim Levitsky
2021-05-27 14:17 ` Paolo Bonzini
2021-05-24 14:01 ` Paolo Bonzini
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