From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8399153BCE for ; Fri, 3 May 2024 13:49:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714744191; cv=none; b=NqM/dntqyjKNoQIPKTdONOXgiJ/IKIAulI1XV5spjNuUzP/tlG1bnCam75JYd68uVCwk3wxkmrIslykxvpn+KfmVPrGiToIQOwgazaHKxKIIY4/401WDYcuFaDRz0S1LjLL+fJa4jZ7HE8JtpMrIGDjKZlKNKvy5aclQUYnVPq8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714744191; c=relaxed/simple; bh=j07SrBcbxR5dXX5FuZ1/lpjovjv+PAI0Ty3nUmrfPsk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=a0MxwG6WjJuvYV3RgCunM1RGuRv61uyGsUCNzT/b7saCIGtGo9NNtILAziJ5pkx+qc03msDpwXVr4tx0Fh2t4fB7+2oGDzi0h/YnfmC1cwHdma9wm5FnZy5DmOkk6kGSQQkaBJdovPWjRwFjwFXMYuvt2LJb31CEK56cte15QrI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=qoK9pR0V; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="qoK9pR0V" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-6f454878591so39156b3a.0 for ; Fri, 03 May 2024 06:49:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1714744189; x=1715348989; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=rQGv5UfxS6jX/aTPX2JQQkA4rH0rnz4JsGbkCfvMiug=; b=qoK9pR0VX+7yhK5foV7UyI7xzgxVCafNPWDfgEv1EYfsASd7/3RTz2J6u0EQ/QBhkw otBXrvIMWr1t9rTLYIfWfzPrQeZ2DTen8ejGl8V4A4BJSpaATMSUE5J0cn9LhNt2Nol7 uDBwYWai7AFD3W3Va47EnJZfo6tG1I9ezJDPPgKLCIRYaXqkRaFJszt5k9e9RlKkqko2 dMGXiQ/k0sGDw17do6A24w9Ncme6LERJqMpxW6rAH8niwA+L0k1+QoI95AtE1KVBsNrk c7hcGDcxVwOhHBX5HO7wR0maJRNsmmBrgq221iGCSj8ltZw6ctVaMTC3as/5j0HfKmL9 SItg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714744189; x=1715348989; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=rQGv5UfxS6jX/aTPX2JQQkA4rH0rnz4JsGbkCfvMiug=; b=Qbhiaw1oZqS0roZRiw96NQXvKm64OjnWoiyEUWNda1Z+wyEDixfdNpHdAkerdf/8Cd 8CYN5ZsQvFTcNAfckF8x3/ERB09IZPDYz4HNzMRDGk+8GOv/IoibUHb+sZjnt+qF4zpO MsfAXBWLu1nCOYwdvpCd4CJfSUgKVQyLW9n7/JXQXD0R2cML6BvG9QYOB0yEhwsE60sp qcL5rCzQeKLVhEoGYrxRnYSgW2P39K0YOISrhwN9vd90YNEagWJMChzBZ1OErXdrYkeq b44YFL6S2fdVNH8FTBCKuCbP4SRKvdZDJuXEZ9MsWoGGD04jjr8oA5JI6kIdjIig9vKe RECQ== X-Forwarded-Encrypted: i=1; AJvYcCVkH5aG94vmM+Tq2xklExjfC3bfGmjzJNYu595rKnMFb719u7IR9PEg+Nhr57ILHnbK+4nu8az0FoNEW/asSECp59KDlUnFgg4bBdd5 X-Gm-Message-State: AOJu0YxcQEMKDBTqSlpsERylg0WrPvUs54+6U++YM5Pk7Ush3k/fJRbR 5PR2qXH9xNHxZpnvEBX9jszw+qvW39zzNsLVfR3US+QL7q6wo29YXlaB8IE8gAsEyCjli4yv2I6 XwA== X-Google-Smtp-Source: AGHT+IGc0eGZplb+oZL3dkGKqelUQj57uqxGLcLhw0noqTEVy1iaqZaCu7zCqnCr5z1/yKblcKIpSFxnXkk= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:2e07:b0:6ea:baf6:57a3 with SMTP id fc7-20020a056a002e0700b006eabaf657a3mr154355pfb.6.1714744189252; Fri, 03 May 2024 06:49:49 -0700 (PDT) Date: Fri, 3 May 2024 06:49:47 -0700 In-Reply-To: <20240503131910.307630-1-mic@digikod.net> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240503131910.307630-1-mic@digikod.net> Message-ID: Subject: Re: [RFC PATCH v3 0/5] Hypervisor-Enforced Kernel Integrity - CR pinning From: Sean Christopherson To: "=?utf-8?Q?Micka=C3=ABl_Sala=C3=BCn?=" Cc: Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Ingo Molnar , Kees Cook , Paolo Bonzini , Thomas Gleixner , Vitaly Kuznetsov , Wanpeng Li , Rick P Edgecombe , Alexander Graf , Angelina Vu , Anna Trikalinou , Chao Peng , Forrest Yuan Yu , James Gowans , James Morris , John Andersen , "Madhavan T . Venkataraman" , Marian Rotariu , "Mihai =?utf-8?B?RG9uyJt1?=" , "=?utf-8?B?TmljdciZb3IgQ8OuyJt1?=" , Thara Gopinath , Trilok Soni , Wei Liu , Will Deacon , Yu Zhang , "=?utf-8?Q?=C8=98tefan_=C8=98icleru?=" , dev@lists.cloudhypervisor.org, kvm@vger.kernel.org, linux-hardening@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, x86@kernel.org, xen-devel@lists.xenproject.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On Fri, May 03, 2024, Micka=C3=ABl Sala=C3=BCn wrote: > Hi, >=20 > This patch series implements control-register (CR) pinning for KVM and > provides an hypervisor-agnostic API to protect guests. It includes the > guest interface, the host interface, and the KVM implementation. >=20 > It's not ready for mainline yet (see the current limitations), but we > think the overall design and interfaces are good and we'd like to have > some feedback on that. ... > # Current limitations >=20 > This patch series doesn't handle VM reboot, kexec, nor hybernate yet. > We'd like to leverage the realated feature from KVM CR-pinning patch > series [3]. Help appreciated! Until you have a story for those scenarios, I don't expect you'll get a lot= of valuable feedback, or much feedback at all. They were the hot topic for KV= M CR pinning, and they'll likely be the hot topic now.