* [Qemu-devel] [PATCH] KVM: x86: expose new instruction RDSEED to guest
@ 2014-02-21 17:33 Liu, Jinsong
2014-02-22 14:54 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Liu, Jinsong @ 2014-02-21 17:33 UTC (permalink / raw)
To: Paolo Bonzini
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, gleb@redhat.com,
linux-kernel@vger.kernel.org
>From 24ffdce9efebf13c6ed4882f714b2b57ef1141eb Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@intel.com>
Date: Thu, 20 Feb 2014 17:38:26 +0800
Subject: [PATCH] KVM: x86: expose new instruction RDSEED to guest
RDSEED instruction return a random number, which supplied by a
cryptographically secure, deterministic random bit generator(DRBG).
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
---
arch/x86/kvm/cpuid.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index c697625..abe18b4 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -303,7 +303,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
/* cpuid 7.0.ebx */
const u32 kvm_supported_word9_x86_features =
F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
- F(BMI2) | F(ERMS) | f_invpcid | F(RTM);
+ F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | F(RDSEED);
/* all calls to cpuid_count() should be made on the same cpu */
get_cpu();
--
1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] [PATCH] KVM: x86: expose new instruction RDSEED to guest
2014-02-21 17:33 [Qemu-devel] [PATCH] KVM: x86: expose new instruction RDSEED to guest Liu, Jinsong
@ 2014-02-22 14:54 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2014-02-22 14:54 UTC (permalink / raw)
To: Liu, Jinsong
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, gleb@redhat.com,
linux-kernel@vger.kernel.org
Il 21/02/2014 18:33, Liu, Jinsong ha scritto:
> From 24ffdce9efebf13c6ed4882f714b2b57ef1141eb Mon Sep 17 00:00:00 2001
> From: Liu Jinsong <jinsong.liu@intel.com>
> Date: Thu, 20 Feb 2014 17:38:26 +0800
> Subject: [PATCH] KVM: x86: expose new instruction RDSEED to guest
>
> RDSEED instruction return a random number, which supplied by a
> cryptographically secure, deterministic random bit generator(DRBG).
>
> Signed-off-by: Xudong Hao <xudong.hao@intel.com>
> Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
> ---
> arch/x86/kvm/cpuid.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
> index c697625..abe18b4 100644
> --- a/arch/x86/kvm/cpuid.c
> +++ b/arch/x86/kvm/cpuid.c
> @@ -303,7 +303,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
> /* cpuid 7.0.ebx */
> const u32 kvm_supported_word9_x86_features =
> F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
> - F(BMI2) | F(ERMS) | f_invpcid | F(RTM);
> + F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | F(RDSEED);
>
> /* all calls to cpuid_count() should be made on the same cpu */
> get_cpu();
>
Applied to kvm/queue, thanks.
Paolo
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