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Shutemov" To: Joerg Roedel Cc: Borislav Petkov , Andy Lutomirski , Sean Christopherson , Andrew Morton , Andi Kleen , Kuppuswamy Sathyanarayanan , David Rientjes , Vlastimil Babka , Tom Lendacky , Thomas Gleixner , Peter Zijlstra , Paolo Bonzini , Ingo Molnar , Varad Gautam , Dario Faggioli , x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: Re: [PATCH 0/5] x86: Impplement support for unaccepted memory Message-ID: <20210812101054.5y6oufwwnisebuyy@box.shutemov.name> References: <20210810062626.1012-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=shutemov-name.20150623.gappssmtp.com header.s=20150623 header.b=WL7h+MV3; spf=none (imf28.hostedemail.com: domain of kirill@shutemov.name has no SPF policy when checking 209.85.208.176) smtp.mailfrom=kirill@shutemov.name; dmarc=none X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: CD98F90057C9 X-Stat-Signature: 8wdk6djbrzjmpj3nzc9a5e9jmoogb8bs X-HE-Tag: 1628763042-875761 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Aug 12, 2021 at 10:23:24AM +0200, Joerg Roedel wrote: > Hi Kirill, > > On Tue, Aug 10, 2021 at 09:26:21AM +0300, Kirill A. Shutemov wrote: > > Accepting happens via a protocol specific for the Virtrual Machine > > platform. > > That sentence bothers me a bit. Can you explain what it VMM specific in > the acceptance protocol? For TDX we have a signle MapGPA hypercall to VMM plus TDAcceptPage for every accepted page to TDX Module. SEV-SNP has to something similar. -- Kirill A. Shutemov