linux-kernel - Re: [PATCH v2 7/7] KVM: X86: Move kvm_apic_set_version() to kvm_update_vcpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 2 Jul 2020 12:00:09 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Xiaoyao Li <xiaoyao.li@...el.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 7/7] KVM: X86: Move kvm_apic_set_version() to
 kvm_update_vcpu_model()

On Tue, Jun 23, 2020 at 07:58:16PM +0800, Xiaoyao Li wrote:
> Obviously, kvm_apic_set_version() fits well in kvm_update_vcpu_model().

Same as the last patch, it would be nice to explicitly document that there
are no dependencies between kvm_apic_set_version() and kvm_update_cpuid().

> Signed-off-by: Xiaoyao Li <xiaoyao.li@...el.com>
> ---
>  arch/x86/kvm/cpuid.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
> index 5decc2dd5448..3428f4d84b42 100644
> --- a/arch/x86/kvm/cpuid.c
> +++ b/arch/x86/kvm/cpuid.c
> @@ -129,6 +129,8 @@ void kvm_update_vcpu_model(struct kvm_vcpu *vcpu)
>  			apic->lapic_timer.timer_mode_mask = 3 << 17;
>  		else
>  			apic->lapic_timer.timer_mode_mask = 1 << 17;
> +
> +		kvm_apic_set_version(vcpu);
>  	}
>  
>  	best = kvm_find_cpuid_entry(vcpu, 0xD, 0);
> @@ -226,7 +228,6 @@ int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
>  	}
>  
>  	cpuid_fix_nx_cap(vcpu);
> -	kvm_apic_set_version(vcpu);
>  	kvm_update_cpuid(vcpu);
>  	kvm_update_vcpu_model(vcpu);
>  
> @@ -255,7 +256,6 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
>  		goto out;
>  	}
>  
> -	kvm_apic_set_version(vcpu);
>  	kvm_update_cpuid(vcpu);
>  	kvm_update_vcpu_model(vcpu);
>  out:
> -- 
> 2.18.2
>