linux-kernel - [PATCH v1] Add KVM support for Intel local MCE

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-next>] [day] [month] [year] [list]

Date:	Fri,  3 Jun 2016 14:08:50 +0800
From:	Haozhong Zhang <haozhong.zhang@...el.com>
To:	kvm@...r.kernel.org
Cc:	Paolo Bonzini <pbonzini@...hat.com>, rkrcmar@...hat.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, Gleb Natapov <gleb@...nel.org>,
	Boris Petkov <bp@...e.de>, Tony Luck <tony.luck@...el.com>,
	Ashok Raj <ashok.raj@...el.com>,
	Andi Kleen <andi.kleen@...el.com>,
	Haozhong Zhang <haozhong.zhang@...el.com>
Subject: [PATCH v1] Add KVM support for Intel local MCE

Previous v0 patch can be found at
http://permalink.gmane.org/gmane.linux.kernel/2104347

Changes in v1:
 * Change macro KVM_MCE_CAP_SUPPORTED to variable kvm_mce_cap_supported.
 * Include LMCE capability in kvm_mce_cap_supported only on Intel CPU,
   i.e. LMCE can be enabled only on Intel CPU.
 * Check if LMCE is enabled in guest MSR_IA32_FEATURE_CONTROL when
   handling guest access to MSR_IA32_MCG_EXT_CTL.

This patch along with the corresponding QEMU patch series (sent via
another email with title "[PATCH v3 0/2] Add QEMU support for Intel
local MCE") enables Intel local MCE feature for guest. This KVM patch
handles guest access to LMCE-related MSR (MSR_IA32_MCG_EXT_CTL and
MSR_IA32_FEATURE_CONTROL).

Haozhong Zhang (1):
  KVM: VMX: enable guest access to LMCE related MSRs

 arch/x86/include/asm/kvm_host.h |  3 +++
 arch/x86/kvm/vmx.c              | 27 +++++++++++++++++++++++++--
 arch/x86/kvm/x86.c              | 12 ++++++------
 3 files changed, 34 insertions(+), 8 deletions(-)

-- 
2.8.3