linux-kernel - [PATCH v3 3/4] KVM/X86: add MSR_IA32_BNDCFGS to msrs_to

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <DE8DF0795D48FD4CA783C40EC82923350149E349@SHSMSX101.ccr.corp.intel.com>
Date:	Tue, 21 Jan 2014 19:03:36 +0000
From:	"Liu, Jinsong" <jinsong.liu@...el.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
CC:	"gleb@...hat.com" <gleb@...hat.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"qemu-devel@...gnu.org" <qemu-devel@...gnu.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"Ren, Qiaowei" <qiaowei.ren@...el.com>
Subject: [PATCH v3 3/4] KVM/X86: add MSR_IA32_BNDCFGS to msrs_to_save

>From d1992769911f34cb319fe638d32ae604bd2a6ce8 Mon Sep 17 00:00:00 2001
From: Liu Jinsong <jinsong.liu@...el.com>
Date: Fri, 13 Dec 2013 02:33:08 +0800
Subject: [PATCH v3 3/4] KVM/X86: add MSR_IA32_BNDCFGS to msrs_to_save

Add MSR_IA32_BNDCFGS to msrs_to_save, and corresponding logic
to kvm_get/set_msr().

Signed-off-by: Liu Jinsong <jinsong.liu@...el.com>
---
 arch/x86/include/asm/vmx.h |    2 ++
 arch/x86/kvm/vmx.c         |    6 ++++++
 arch/x86/kvm/x86.c         |    2 +-
 3 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 1bf4681..47b4c88 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -175,6 +175,8 @@ enum vmcs_field {
 	GUEST_PDPTR2_HIGH               = 0x0000280f,
 	GUEST_PDPTR3                    = 0x00002810,
 	GUEST_PDPTR3_HIGH               = 0x00002811,
+	GUEST_BNDCFGS                   = 0x00002812,
+	GUEST_BNDCFGS_HIGH              = 0x00002813,
 	HOST_IA32_PAT			= 0x00002c00,
 	HOST_IA32_PAT_HIGH		= 0x00002c01,
 	HOST_IA32_EFER			= 0x00002c02,
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6d7d9ad..a6a7556 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2465,6 +2465,9 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
 	case MSR_IA32_SYSENTER_ESP:
 		data = vmcs_readl(GUEST_SYSENTER_ESP);
 		break;
+	case MSR_IA32_BNDCFGS:
+		data = vmcs_readl(GUEST_BNDCFGS);
+		break;
 	case MSR_TSC_AUX:
 		if (!to_vmx(vcpu)->rdtscp_enabled)
 			return 1;
@@ -2524,6 +2527,9 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 	case MSR_IA32_SYSENTER_ESP:
 		vmcs_writel(GUEST_SYSENTER_ESP, data);
 		break;
+	case MSR_IA32_BNDCFGS:
+		vmcs_writel(GUEST_BNDCFGS, data);
+		break;
 	case MSR_IA32_TSC:
 		kvm_write_tsc(vcpu, msr_info);
 		break;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1657ca2..8ca2269 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -852,7 +852,7 @@ static u32 msrs_to_save[] = {
 	MSR_CSTAR, MSR_KERNEL_GS_BASE, MSR_SYSCALL_MASK, MSR_LSTAR,
 #endif
 	MSR_IA32_TSC, MSR_IA32_CR_PAT, MSR_VM_HSAVE_PA,
-	MSR_IA32_FEATURE_CONTROL
+	MSR_IA32_FEATURE_CONTROL, MSR_IA32_BNDCFGS
 };
 
 static unsigned num_msrs_to_save;
-- 
1.7.1
--
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/