linux-kernel - Re: [PATCH v5 07/19] KVM:x86: Add fault checks for guest CR4.CET setting

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Message-ID: <ZMtuRx+rM5v9eWEh@chao-email>
Date:   Thu, 3 Aug 2023 17:07:19 +0800
From:   Chao Gao <chao.gao@...el.com>
To:     Yang Weijiang <weijiang.yang@...el.com>
CC:     <seanjc@...gle.com>, <pbonzini@...hat.com>, <peterz@...radead.org>,
        <john.allen@....com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <rick.p.edgecombe@...el.com>,
        <binbin.wu@...ux.intel.com>
Subject: Re: [PATCH v5 07/19] KVM:x86: Add fault checks for guest CR4.CET
 setting

nit: add a space betwen "KVM:" and "x86:" in the short changelog.

On Thu, Aug 03, 2023 at 12:27:20AM -0400, Yang Weijiang wrote:
>Check potential faults for CR4.CET setting per Intel SDM.
>CET can be enabled if and only if CR0.WP==1, i.e. setting
>CR4.CET=1 faults if CR0.WP==0 and setting CR0.WP=0 fails
>if CR4.CET==1.
>
>Co-developed-by: Sean Christopherson <seanjc@...gle.com>
>Signed-off-by: Sean Christopherson <seanjc@...gle.com>
>Signed-off-by: Yang Weijiang <weijiang.yang@...el.com>

Reviewed-by: Chao Gao <chao.gao@...el.com>