linux-kernel - Re: [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get some from kvm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <53F06B6D.7050103@redhat.com>
Date:	Sun, 17 Aug 2014 10:44:29 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Andy Lutomirski <luto@...capital.net>,
	Theodore Ts'o <tytso@....edu>,
	"H. Peter Anvin" <hpa@...or.com>, kvm list <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kees Cook <keescook@...omium.org>, X86 ML <x86@...nel.org>,
	Daniel Borkmann <dborkman@...hat.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	Gleb Natapov <gleb@...nel.org>, Bandan Das <bsd@...hat.com>,
	Andrew Honig <ahonig@...gle.com>,
	KY Srinivasan <kys@...rosoft.com>
Subject: Re: [PATCH v5 0/5] random,x86,kvm: Rework arch RNG seeds and get
 some from kvm

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/