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Date: Thu, 17 Jul 2014 10:43:49 -0700 From: Andrew Honig <ahonig@...gle.com> To: Andy Lutomirski <luto@...capital.net> Cc: kvm <kvm@...r.kernel.org>, "H. Peter Anvin" <hpa@...or.com>, "Theodore Ts'o" <tytso@....edu>, linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>, 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>, Paolo Bonzini <pbonzini@...hat.com>, bsd@...hat.com Subject: Re: [PATCH v3 1/5] x86,kvm: Add MSR_KVM_GET_RNG_SEED and a matching feature bit > + case MSR_KVM_GET_RNG_SEED: > + get_random_bytes(&data, sizeof(data)); > + break; Should this be rate limited in the interest of conserving randomness? If there ever is an attack on the prng, this would create very favorable conditions for an attacker to exploit it. -- 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/
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