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X-IronPort-AV: E=McAfee;i="6600,9927,10735"; a="385922156" X-IronPort-AV: E=Sophos;i="6.00,228,1681196400"; d="scan'208";a="385922156" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2023 03:04:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10735"; a="823013867" X-IronPort-AV: E=Sophos;i="6.00,228,1681196400"; d="scan'208";a="823013867" Received: from mbahx-mobl1.ger.corp.intel.com (HELO box.shutemov.name) ([10.249.43.216]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2023 03:03:54 -0700 Received: by box.shutemov.name (Postfix, from userid 1000) id 30D58104C0F; Fri, 9 Jun 2023 13:03:52 +0300 (+03) Date: Fri, 9 Jun 2023 13:03:52 +0300 From: kirill.shutemov@linux.intel.com To: Kai Huang Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, dave.hansen@intel.com, tony.luck@intel.com, peterz@infradead.org, tglx@linutronix.de, seanjc@google.com, pbonzini@redhat.com, david@redhat.com, dan.j.williams@intel.com, rafael.j.wysocki@intel.com, ying.huang@intel.com, reinette.chatre@intel.com, len.brown@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 Subject: Re: [PATCH v11 16/20] x86/virt/tdx: Initialize all TDMRs Message-ID: <20230609100352.6gnn5foahnppibmm@box.shutemov.name> References: <7bd7d0c6196deb58b54d6e629603775844b1307d.1685887183.git.kai.huang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7bd7d0c6196deb58b54d6e629603775844b1307d.1685887183.git.kai.huang@intel.com> X-Rspamd-Queue-Id: DE3B940004 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: 1j7orkz3cdz8u8hkrmqy9eis3zwa6hb8 X-HE-Tag: 1686305053-508975 X-HE-Meta: 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 Z+ZopaPe yOEDtM0Vo6vxVJa1aIkXi+dOy0wCHpLoW7mzbyoHfu5TV2Zz2/+aZAomhKHBZ4j0K9+pW6xbkaz7RRsDc7VRFs8DE82BhPtB6LuNrdRFjzTxHpsXPdXaf8m7CH//qJunpYxmtHQC/Rpe9964nZrtzTgGNURbkzhigUGliD+8DNnfa8Po= 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 Mon, Jun 05, 2023 at 02:27:29AM +1200, Kai Huang wrote: > After the global KeyID has been configured on all packages, initialize > all TDMRs to make all TDX-usable memory regions that are passed to the > TDX module become usable. > > This is the last step of initializing the TDX module. > > Initializing TDMRs can be time consuming on large memory systems as it > involves initializing all metadata entries for all pages that can be > used by TDX guests. Initializing different TDMRs can be parallelized. > For now to keep it simple, just initialize all TDMRs one by one. It can > be enhanced in the future. > > Signed-off-by: Kai Huang > Reviewed-by: Isaku Yamahata Reviewed-by: Kirill A. Shutemov -- Kiryl Shutsemau / Kirill A. Shutemov