Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753261AbaAUTFQ (ORCPT ); Tue, 21 Jan 2014 14:05:16 -0500 Received: from mga09.intel.com ([134.134.136.24]:38081 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750773AbaAUTFN convert rfc822-to-8bit (ORCPT ); Tue, 21 Jan 2014 14:05:13 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,697,1384329600"; d="scan'208,223";a="470270768" From: "Liu, Jinsong" To: Paolo Bonzini CC: "gleb@redhat.com" , "kvm@vger.kernel.org" , "qemu-devel@nongnu.org" , "linux-kernel@vger.kernel.org" , "hpa@zytor.com" , "Ren, Qiaowei" Subject: [PATCH v3 4/4] KVM/X86: Enable Intel MPX for guest Thread-Topic: [PATCH v3 4/4] KVM/X86: Enable Intel MPX for guest Thread-Index: Ac8W262ptZY/EYu/RluA4aAR04+ltw== Date: Tue, 21 Jan 2014 19:04:58 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.127.40] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >From c2b3b4347b4c8b0aa6b5e97c161fd4d34b0ef4d3 Mon Sep 17 00:00:00 2001 From: Liu Jinsong Date: Fri, 13 Dec 2013 02:34:48 +0800 Subject: [PATCH v3 4/4] KVM/X86: Enable Intel MPX for guest. This patch enable Intel MPX feature to guest. Signed-off-by: Xudong Hao Signed-off-by: Liu Jinsong --- arch/x86/kvm/cpuid.c | 2 +- arch/x86/kvm/x86.c | 3 +++ arch/x86/kvm/x86.h | 3 ++- 3 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 2d661e6..e30d4ce 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(MPX); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8ca2269..410421a 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -597,6 +597,9 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr) if (xcr0 & ~valid_bits) return 1; + if ((!(xcr0 & XSTATE_BNDREGS)) != (!(xcr0 & XSTATE_BNDCSR))) + return 1; + kvm_put_guest_xcr0(vcpu); vcpu->arch.xcr0 = xcr0; diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 587fb9e..985e40e 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -122,7 +122,8 @@ int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt, gva_t addr, void *val, unsigned int bytes, struct x86_exception *exception); -#define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM) +#define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \ + | XSTATE_BNDREGS | XSTATE_BNDCSR) extern u64 host_xcr0; extern struct static_key kvm_no_apic_vcpu; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/