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To:     isaku.yamahata@intel.com, Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>, erdemaktas@google.com,
        Connor Kuehl <ckuehl@redhat.com>,
        Sean Christopherson <seanjc@google.com>,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc:     isaku.yamahata@intel.com, isaku.yamahata@gmail.com,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Kai Huang <kai.huang@linux.intel.com>
Subject: Re: [RFC PATCH v3 17/59] KVM: x86: Add flag to disallow #MC
 injection / KVM_X86_SETUP_MCE
In-Reply-To: <b7c89ebf9f2000c1f8c3d0e57bd7cf622f11f638.1637799475.git.isaku.yamahata@intel.com>
References: <cover.1637799475.git.isaku.yamahata@intel.com>
 <b7c89ebf9f2000c1f8c3d0e57bd7cf622f11f638.1637799475.git.isaku.yamahata@intel.com>
Date:   Thu, 25 Nov 2021 20:33:08 +0100
Message-ID: <87lf1cjaiz.ffs@tglx>
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On Wed, Nov 24 2021 at 16:20, isaku yamahata wrote:
>  static int kvm_vcpu_ioctl_x86_setup_mce(struct kvm_vcpu *vcpu,
>  					u64 mcg_cap)
>  {
> -	int r;
>  	unsigned bank_num = mcg_cap & 0xff, bank;
>  
> -	r = -EINVAL;
> +	if (vcpu->kvm->arch.mce_injection_disallowed)
> +		return -EINVAL;

Yet another flag because the copy & pasta orgy did not cover that
ioctl. What for?