linux-kernel - [PATCH 4.18 051/150] KVM: x86: Do not use kvm_x86_ops->mpx

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

Date:   Fri,  2 Nov 2018 19:33:33 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Liran Alon <liran.alon@...cle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.18 051/150] KVM: x86: Do not use kvm_x86_ops->mpx_supported() directly

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 503234b3fdcaa578395c07e393ea3e5d13958824 ]

Commit a87036add092 ("KVM: x86: disable MPX if host did not enable
MPX XSAVE features") introduced kvm_mpx_supported() to return true
iff MPX is enabled in the host.

However, that commit seems to have missed replacing some calls to
kvm_x86_ops->mpx_supported() to kvm_mpx_supported().

Complete original commit by replacing remaining calls to
kvm_mpx_supported().

Fixes: a87036add092 ("KVM: x86: disable MPX if host did not enable
MPX XSAVE features")

Suggested-by: Sean Christopherson <sean.j.christopherson@...el.com>
Signed-off-by: Liran Alon <liran.alon@...cle.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/x86/kvm/vmx.c | 2 +-
 arch/x86/kvm/x86.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index ea691ddfc3aa..2e23fce5eb1f 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -11567,7 +11567,7 @@ static void prepare_vmcs02_full(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
 
 	set_cr4_guest_host_mask(vmx);
 
-	if (vmx_mpx_supported())
+	if (kvm_mpx_supported())
 		vmcs_write64(GUEST_BNDCFGS, vmcs12->guest_bndcfgs);
 
 	if (enable_vpid) {
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 97fcac34e007..3cd58a5eb449 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4625,7 +4625,7 @@ static void kvm_init_msr_list(void)
 		 */
 		switch (msrs_to_save[i]) {
 		case MSR_IA32_BNDCFGS:
-			if (!kvm_x86_ops->mpx_supported())
+			if (!kvm_mpx_supported())
 				continue;
 			break;
 		case MSR_TSC_AUX:
-- 
2.17.1