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Date: Wed, 6 Apr 2016 13:55:16 +0200
From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Gleb Natapov <gleb@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
        x86@kernel.org, kvm@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
        linux-kernel@vger.kernel.org, tglx@linutronix.de, hpa@zytor.com,
        Arnaldo Carvalho de Melo <acme@infradead.org>
Subject: Re: [PATCH] perf/x86/intel/pt: Don't die on VMXON
Message-ID: <20160406115516.GE12070@pd.tnic>
References: <1459527854-5899-1-git-send-email-alexander.shishkin@linux.intel.com>
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On Wed, Apr 06, 2016 at 01:52:15PM +0200, Peter Zijlstra wrote:
> Borislav tells me this ought to be boot_cpu_has(X86_FEATURE_VMX)
> 
> > +		/* Intel SDM, 36.5 "Tracing post-VMXON" */
> > +		rdmsrl(MSR_IA32_VMX_MISC, reg);
> > +		if (reg & BIT(14))

Also, I needz to consult my crystal ball about what bit 14 is...

:-)

-- 
Regards/Gruss,
    Boris.

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