linux-kernel - Re: [PATCH v2 23/23] kvm: x86: Disable RDMSR interception of IA32_XFD

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Date:   Tue, 21 Dec 2021 10:05:18 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     "Liu, Jing2" <jing2.liu@...el.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>
Cc:     "Christopherson,, Sean" <seanjc@...gle.com>,
        "Nakajima, Jun" <jun.nakajima@...el.com>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        "jing2.liu@...ux.intel.com" <jing2.liu@...ux.intel.com>,
        "Zeng, Guang" <guang.zeng@...el.com>,
        "Wang, Wei W" <wei.w.wang@...el.com>,
        "Zhong, Yang" <yang.zhong@...el.com>
Subject: Re: [PATCH v2 23/23] kvm: x86: Disable RDMSR interception of
 IA32_XFD_ERR

On 12/21/21 10:00, Liu, Jing2 wrote:
> Thanks Paolo.
> 
> BTW do we want to put this together into patch 13 or 14, I guess you were saying patch 14 😊
> [PATCH v2 13/23] kvm: x86: Intercept #NM for saving IA32_XFD_ERR
> [PATCH v2 14/23] kvm: x86: Emulate IA32_XFD_ERR for guest

No, I meant patch 13 because it is where xfd_err is added to struct 
kvm_vcpu and the wrmsr is added on vmentry.

But really it is not a big deal.  You might as well keep it a separate 
patch ("patch 14.5") so we don't have to argue.

Paolo