Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 15 Feb 2018 20:22:09 -0800
From:   Andi Kleen <ak@linux.intel.com>
To:     Jim Mattson <jmattson@google.com>
Cc:     KarimAllah Ahmed <karahmed@amazon.de>,
        kvm list <kvm@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        the arch/x86 maintainers <x86@kernel.org>,
        Ashok Raj <ashok.raj@intel.com>,
        Asit Mallick <asit.k.mallick@intel.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Arjan Van De Ven <arjan.van.de.ven@intel.com>,
        Tim Chen <tim.c.chen@linux.intel.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Dan Williams <dan.j.williams@intel.com>,
        Jun Nakajima <jun.nakajima@intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Greg KH <gregkh@linuxfoundation.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        David Woodhouse <dwmw@amazon.co.uk>
Subject: Re: [PATCH v6 2/5] KVM: x86: Add IBPB support
Message-ID: <20180216042209.GB3231@tassilo.jf.intel.com>
References: <1517522386-18410-1-git-send-email-karahmed@amazon.de>
 <1517522386-18410-3-git-send-email-karahmed@amazon.de>
 <CALMp9eQEjaaK=RDZ3OFL5+fq78nWRrpVO-KJ8ruosV9vWjfW6g@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CALMp9eQEjaaK=RDZ3OFL5+fq78nWRrpVO-KJ8ruosV9vWjfW6g@mail.gmail.com>
User-Agent: Mutt/1.9.2 (2017-12-15)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

> > +               wrmsrl(MSR_IA32_PRED_CMD, PRED_CMD_IBPB);
> 
> Should this be wrmsrl_safe? I don't see where we've verified host
> support of this MSR.

In mainline all wrmsr are wrmsrl_safe now.

-Andi