From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) by mx.groups.io with SMTP id smtpd.web11.93568.1673629574920196251 for ; Fri, 13 Jan 2023 09:06:15 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@google.com header.s=20210112 header.b=q1agfT+i; spf=pass (domain: google.com, ip: 209.85.210.170, mailfrom: dionnaglaze@google.com) Received: by mail-pf1-f170.google.com with SMTP id 20so11223422pfu.13 for ; Fri, 13 Jan 2023 09:06:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=8ZG2fZAsoXNHWCoOodVsZPX9feXa1uvDHHaGFonitIs=; b=q1agfT+i7xeeCMgeTDrHtayfHNi4p4Pp9Fxdar6P6vkhboeebeYNxzHPUjcDy39uPI Ilx6JaDpjrNI+gJWuvZMFrCmlfRK9L7pC7MrIyis4OCisjzN9k+vC9pbi6NQoNw2hL35 sd5KAmPxWPefi9c9Yui/8lF9W1+aMzWhWQP9hm2R0C3r88rCERha/iV849KeswfdCVVy WjZKwToV351lERR6jLTFDtQlqQQBPSEcLKEgbKt8jpPRk5C3sdEFLFjFUvHZa3kE0/dA +1qB2ugyjkn9vBTuDWjxiDtnfyoLpZrwnvm4sTk9FbPtGPfk5OgzvYFTGlWm1bcRCB/Q MKlQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=8ZG2fZAsoXNHWCoOodVsZPX9feXa1uvDHHaGFonitIs=; b=Qmhe6Bw4J44GTQbWft8sQe57Y6932CpWyxSHN9MNtmtc/lcJuwO/54MwtYppH7KX2Z lP/zjMhgr38W2qRgz5qTy11onxYZ20OBovYEguvaL0IOnsgV0pf8+ePKt8kswNC/uHr4 bOVW8lEOwiaTMIfWRjpZ1xEFtJ+4WDe8bHSKKp7m9O4MfU7aV25LfDdB7vQfRHq5dULn pavau82ApKzsWdSEx7NKAd8m18LhbBQE9m+FFiaSCIE/LvAELoyylgaz1AxMzveMHQ5N pchBjb80dpsNtJudx54jL6oOo0AORStw4+CiwhaHTyo2aJF9DZUZC/2L7MbbdZTx3soV K2LA== X-Gm-Message-State: AFqh2krtiMZhPrNnk8LwfctKiJVWUIGiNeYNs83n9UMDSWYr6tVJ2JB6 IiaLTlkLviqK1KzxiTdisu319cL+TMg+GrcV/dET/jSgFXy7Mw== X-Google-Smtp-Source: AMrXdXvzMOhbGbjRNuNhnRQJROIALKz9yLLB5Q1Z5OKV4yql7PxFPa1Y/gcClPxMrdQlcWSM8lg/SgFCCOdsO/dqpzs= X-Received: by 2002:a63:d80b:0:b0:478:e542:7d77 with SMTP id b11-20020a63d80b000000b00478e5427d77mr5084762pgh.101.1673629573671; Fri, 13 Jan 2023 09:06:13 -0800 (PST) MIME-Version: 1.0 References: <16581.1673625639418051810@groups.io> In-Reply-To: <16581.1673625639418051810@groups.io> From: "Dionna Glaze" Date: Fri, 13 Jan 2023 09:06:02 -0800 Message-ID: Subject: Re: [edk2-devel] [PATCH v9 0/4] Add safe unaccepted memory behavior To: devel@edk2.groups.io, dave.hansen@linux.intel.com Cc: Jiewen Content-Type: text/plain; charset="UTF-8" Thanks for your perspective, Dave. From what I understand, distributions lag behind, user kernel configurations can be varied, and Kirill's patch set is still untested with regards to memory latency of workloads. We may yet see folks opt for a slow boot for better latency. This protocol is for safety purposes, since "hope is not a strategy" as is commonly said at Google. On Fri, Jan 13, 2023 at 9:01 AM wrote: > > Hi Folks, > > My hope (from the x86 side at least) was that all functional Linux TDX guests will have memory acceptance support. We don't have fully-functional guest code yet and assuming that Linux memory acceptance support will be in place before we get there. > > Basically, I was hoping that Linux could get away without needing any kind of negotiation with the firmware. > > (btw, I'm replying in the web interface. Apologies for any odd formatting) > -- -Dionna Glaze, PhD (she/her)