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From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH] KVM: nVMX: Remove stale comment from nested_vmx_load_cr3()
Date: Tue, 04 Feb 2020 17:15:44 +0100	[thread overview]
Message-ID: <87imkmmiq7.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <20200204153259.16318-1-sean.j.christopherson@intel.com>

Sean Christopherson <sean.j.christopherson@intel.com> writes:

> The blurb pertaining to the return value of nested_vmx_load_cr3() no
> longer matches reality, remove it entirely as the behavior it is
> attempting to document is quite obvious when reading the actual code.

"And if it doesn't seem that obvious just try staring at it for a few
years, do some small (60-70 patches) refactorings and fix several dozens
of bugs. It will." :-)

>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> ---
>  arch/x86/kvm/vmx/nested.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
> index 7608924ee8c1..0c9b847f7a25 100644
> --- a/arch/x86/kvm/vmx/nested.c
> +++ b/arch/x86/kvm/vmx/nested.c
> @@ -1076,8 +1076,6 @@ static bool nested_cr3_valid(struct kvm_vcpu *vcpu, unsigned long val)
>  /*
>   * Load guest's/host's cr3 at nested entry/exit. nested_ept is true if we are
>   * emulating VM entry into a guest with EPT enabled.
> - * Returns 0 on success, 1 on failure. Invalid state exit qualification code
> - * is assigned to entry_failure_code on failure.
>   */
>  static int nested_vmx_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3, bool nested_ept,
>  			       u32 *entry_failure_code)

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>

-- 
Vitaly


  reply	other threads:[~2020-02-04 16:15 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-04 15:32 [PATCH] KVM: nVMX: Remove stale comment from nested_vmx_load_cr3() Sean Christopherson
2020-02-04 16:15 ` Vitaly Kuznetsov [this message]
2020-02-04 19:57 ` Krish Sadhukhan
2020-02-04 20:36   ` Sean Christopherson
2020-02-04 22:01     ` Krish Sadhukhan
2020-02-05 14:31       ` Paolo Bonzini
  -- strict thread matches above, loose matches on Subject: below --
2020-02-05  1:57 linmiaohe

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