linux-kernel - Re: [PATCH] perf/x86: Fix HO/GO counting with SVM disabled

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Message-ID: <4F4D0DD6.9030302@redhat.com>
Date:	Tue, 28 Feb 2012 19:24:38 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Joerg Roedel <joerg.roedel@....com>
CC:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org, joro@...tes.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>,
	Stephane Eranian <eranian@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Gleb Natapov <gleb@...hat.com>,
	Robert Richter <robert.richter@....com>
Subject: Re: [PATCH] perf/x86: Fix HO/GO counting with SVM disabled

On 02/28/2012 05:55 PM, Joerg Roedel wrote:
>  
>  __init int amd_pmu_init(void)
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index 5fa553b..773fee2 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -29,6 +29,7 @@
>  #include <linux/ftrace_event.h>
>  #include <linux/slab.h>
>  
> +#include <asm/perf_event.h>
>  #include <asm/tlbflush.h>
>  #include <asm/desc.h>
>  #include <asm/kvm_para.h>
> @@ -575,6 +576,8 @@ static void svm_hardware_disable(void *garbage)
>  		wrmsrl(MSR_AMD64_TSC_RATIO, TSC_RATIO_DEFAULT);
>  
>  	cpu_svm_disable();
> +
> +	x86_pmu_disable_virt();
>  }
>  
>  static int svm_hardware_enable(void *garbage)
> @@ -622,6 +625,8 @@ static int svm_hardware_enable(void *garbage)
>  
>  	svm_init_erratum_383();
>  
> +	x86_pmu_enable_virt();
> +
>  	return 0;
>  }
>  

These should go into x86.c.  If the functions later gain meaning on
Intel, we want them to be called (and nothing in the name suggests
they're AMD specific).

-- 
error compiling committee.c: too many arguments to function

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