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Date: Tue, 2 Jan 2024 10:27:34 -0800 (PST)
From: David Rientjes <rientjes@google.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
cc: Paolo Bonzini <pbonzini@redhat.com>, Wanpeng Li <wanpengli@tencent.com>, 
    Vitaly Kuznetsov <vkuznets@redhat.com>, 
    Sean Christopherson <seanjc@google.com>, 
    Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, 
    Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, 
    Tom Lendacky <thomas.lendacky@amd.com>, x86@kernel.org, 
    kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/sev: Fix SEV check in sev_map_percpu_data()
In-Reply-To: <20240102133747.27053-1-kirill.shutemov@linux.intel.com>
Message-ID: <cb702fe9-11a6-8a0c-925a-179cb3f6c516@google.com>
References: <20240102133747.27053-1-kirill.shutemov@linux.intel.com>
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On Tue, 2 Jan 2024, Kirill A. Shutemov wrote:

> The function sev_map_percpu_data() checks if it is running on an SEV
> platform by checking the CC_ATTR_GUEST_MEM_ENCRYPT attribute. However,
> this attribute is also defined for TDX.
> 
> To avoid false positives, add a cc_vendor check.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

Acked-by: David Rientjes <rientjes@google.com>