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From: Paolo Bonzini <pbonzini@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>,
	Theodore Ts'o <tytso@mit.edu>, "H. Peter Anvin" <hpa@zytor.com>,
	kvm list <kvm@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Kees Cook <keescook@chromium.org>, X86 ML <x86@kernel.org>,
	Daniel Borkmann <dborkman@redhat.com>,
	Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
	Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
	Gleb Natapov <gleb@kernel.org>, Bandan Das <bsd@redhat.com>,
	Andrew Honig <ahonig@google.com>,
	KY Srinivasan <kys@microsoft.com>
Subject: Re: [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get some from kvm
Date: Sun, 17 Aug 2014 10:44:29 +0200	[thread overview]
Message-ID: <53F06B6D.7050103@redhat.com> (raw)
In-Reply-To: <CALCETrVTsyq4u+G2Td7Gmi6pa6c1ePgavqN31mjo9_E5=7bGCg@mail.gmail.com>

Il 13/08/2014 20:33, Andy Lutomirski ha scritto:
> As for doing arch_random_init after clone/migration, I think we'll
> need another KVM extension for that, since, AFAIK, we don't actually
> get notified that we were cloned or migrated.  That will be
> nontrivial.  Maybe we can figure that out at KS, too.

Migration doesn't need an arch_random_init, only cloning does.

MS has an ACPI-based specification for this they call the "VM Generation
ID", which QEMU should be implementing it sooner rather than later.  In
Linux we could add a generic notifier, and an x86 platform driver that
implements the VM Generation ID specification and invokes the notifier.

http://go.microsoft.com/fwlink/p/?LinkID=260709 (warning, .docx ahead)

KY, would you be interested in looking at this?

Paolo

      parent reply	other threads:[~2014-08-17  8:44 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-24  4:57 [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get some from kvm Andy Lutomirski
2014-07-24  4:57 ` [PATCH v5 1/5] x86,kvm: Add MSR_KVM_GET_RNG_SEED and a matching feature bit Andy Lutomirski
2014-07-31 11:56   ` Paolo Bonzini
2014-07-24  4:57 ` [PATCH v5 2/5] random: Add and use arch_get_rng_seed Andy Lutomirski
2014-07-29 23:46   ` Andy Lutomirski
2014-08-04 22:25   ` Theodore Ts'o
2014-07-24  4:57 ` [PATCH v5 3/5] x86,random: Add an x86 implementation of arch_get_rng_seed Andy Lutomirski
2014-07-24  4:57 ` [PATCH v5 4/5] x86,random,kvm: Use KVM_GET_RNG_SEED in arch_get_rng_seed Andy Lutomirski
2014-07-31 11:56   ` Paolo Bonzini
2014-07-24  4:57 ` [PATCH v5 5/5] x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available Andy Lutomirski
2014-07-31 11:56   ` Paolo Bonzini
2014-08-12 19:11 ` [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get some from kvm Andy Lutomirski
2014-08-12 19:17   ` Theodore Ts'o
2014-08-12 19:22     ` Andy Lutomirski
2014-08-13  7:48       ` H. Peter Anvin
2014-08-13  8:37         ` Andy Lutomirski
2014-08-13 14:32         ` Theodore Ts'o
2014-08-13 16:13           ` Andy Lutomirski
2014-08-13 17:45             ` H. Peter Anvin
2014-08-13 18:22               ` Theodore Ts'o
2014-08-13 18:33                 ` Andy Lutomirski
2014-08-13 18:44                   ` H. Peter Anvin
2014-08-14  2:41                     ` H. Peter Anvin
2014-08-14  5:14                       ` Andy Lutomirski
2014-08-17  8:44                   ` Paolo Bonzini [this message]

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