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([2601:646:c200:1ef2:e17c:78f7:dc94:55dd]) by smtp.gmail.com with ESMTPSA id g26sm18130550pge.67.2021.03.29.16.23.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Mar 2021 16:23:38 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Andy Lutomirski Mime-Version: 1.0 (1.0) Subject: Re: [PATCH v3 1/1] x86/tdx: Handle MWAIT, MONITOR and WBINVD Date: Mon, 29 Mar 2021 16:23:37 -0700 Message-Id: <377A7B0B-9959-4AFC-A575-7AC20FEE6077@amacapital.net> References: <837afe840f5826bf7fcba07a5e483d7e2283db34.1617059703.git.sathyanarayanan.kuppuswamy@linux.intel.com> Cc: Peter Zijlstra , Andy Lutomirski , Dave Hansen , Andi Kleen , Kirill Shutemov , Kuppuswamy Sathyanarayanan , Dan Williams , Raj Ashok , Sean Christopherson , linux-kernel@vger.kernel.org In-Reply-To: <837afe840f5826bf7fcba07a5e483d7e2283db34.1617059703.git.sathyanarayanan.kuppuswamy@linux.intel.com> To: Kuppuswamy Sathyanarayanan X-Mailer: iPhone Mail (18D61) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Mar 29, 2021, at 4:17 PM, Kuppuswamy Sathyanarayanan wrote: >=20 > =EF=BB=BFIn non-root TDX guest mode, MWAIT, MONITOR and WBINVD instruction= s > are not supported. So handle #VE due to these instructions > appropriately. Is there something I missed elsewhere in the code that checks CPL?