linux-kernel - Re: [PATCH v5 11/19] KVM:VMX: Emulate read and write to CET MSRs

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Message-ID: <b5c8d8cb-90c9-dff3-7f1c-e0f669950191@redhat.com>
Date:   Fri, 4 Aug 2023 23:40:44 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Yang Weijiang <weijiang.yang@...el.com>, seanjc@...gle.com,
        peterz@...radead.org, john.allen@....com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     rick.p.edgecombe@...el.com, chao.gao@...el.com,
        binbin.wu@...ux.intel.com
Subject: Re: [PATCH v5 11/19] KVM:VMX: Emulate read and write to CET MSRs

On 8/3/23 06:27, Yang Weijiang wrote:
> +		if (msr_info->index == MSR_KVM_GUEST_SSP)
> +			msr_info->data = vmcs_readl(GUEST_SSP);

Accesses to MSR_KVM_(GUEST_)SSP must be rejected unless host-initiated.

Paolo