linux-kernel - Re: [PATCH] KVM: SVM: comment nested paging and virtualization module parameters

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Date:	Mon, 16 Jan 2012 08:22:02 -0200
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Davidlohr Bueso <dave@....org>
Cc:	Avi Kivity <avi@...hat.com>, KVM <kvm@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KVM: SVM: comment nested paging and virtualization
 module parameters

On Fri, Jan 13, 2012 at 02:51:56PM +0100, Davidlohr Bueso wrote:
> From: Davidlohr Bueso <dave@....org>
> 
> Also use true instead of 1 for enabling by default.
> 
> Signed-off-by: Davidlohr Bueso <dave@....org>
> ---
>  arch/x86/kvm/svm.c |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index 5fa553b..3c9b0dc 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -176,11 +176,13 @@ static bool npt_enabled = true;
>  #else
>  static bool npt_enabled;
>  #endif
> -static int npt = 1;
>  
> +/* disable nested paging (virtualized MMU) for all guests */
> +static int npt = true;
>  module_param(npt, int, S_IRUGO);

Should be "allow nested paging"...

> -static int nested = 1;
> +/* allow nested virtualization in KVM/SVM */
> +static int nested = true;
>  module_param(nested, int, S_IRUGO);
>  
>  static void svm_flush_tlb(struct kvm_vcpu *vcpu);

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