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([2a09:80c0:192:0:5dac:bf3d:c41:c3e7]) by smtp.gmail.com with ESMTPSA id x8-20020a5d60c8000000b002cea8664304sm7175075wrt.91.2023.03.16.05.57.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Mar 2023 05:57:17 -0700 (PDT) Message-ID: <6467e120-67d4-84c6-20cc-c6426ea9e877@redhat.com> Date: Thu, 16 Mar 2023 13:57:16 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH v10 03/16] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC To: Kai Huang , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: linux-mm@kvack.org, dave.hansen@intel.com, peterz@infradead.org, tglx@linutronix.de, seanjc@google.com, pbonzini@redhat.com, dan.j.williams@intel.com, rafael.j.wysocki@intel.com, kirill.shutemov@linux.intel.com, ying.huang@intel.com, reinette.chatre@intel.com, len.brown@intel.com, tony.luck@intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, chao.gao@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, bagasdotme@gmail.com, sagis@google.com, imammedo@redhat.com References: From: David Hildenbrand Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 2C5EDC0009 X-Rspamd-Server: rspam01 X-Stat-Signature: myb1bcn691su4rym3z77687axfg4gpm3 X-HE-Tag: 1678971440-551158 X-HE-Meta: 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 zsQbs0f8 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000005, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 06.03.23 15:13, Kai Huang wrote: > TDX capable platforms are locked to X2APIC mode and cannot fall back to > the legacy xAPIC mode when TDX is enabled by the BIOS. TDX host support > requires x2APIC. Make INTEL_TDX_HOST depend on X86_X2APIC. > > Link: https://lore.kernel.org/lkml/ba80b303-31bf-d44a-b05d-5c0f83038798@intel.com/ > Signed-off-by: Kai Huang > Reviewed-by: Dave Hansen > --- Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb