linux-kernel - Re: [PATCH 03/13] KVM: MMU: split FNAME(prefetch_invalid

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Message-ID: <4F745CFE.4070703@redhat.com>
Date:	Thu, 29 Mar 2012 15:00:46 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH 03/13] KVM: MMU: split FNAME(prefetch_invalid_gpte)

On 03/29/2012 11:22 AM, Xiao Guangrong wrote:
> Split FNAME(prefetch_invalid_gpte) to check gpte independently which will
> be used in the later patch
>
>
> -static bool FNAME(prefetch_invalid_gpte)(struct kvm_vcpu *vcpu,
> -				    struct kvm_mmu_page *sp, u64 *spte,
> -				    pt_element_t gpte)
> +static bool FNAME(invalid_gpte)(struct kvm_vcpu *vcpu, pt_element_t gpte)
>  {
>  	if (is_rsvd_bits_set(&vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
> -		goto no_present;
> +		return true;
>
>  	if (!is_present_gpte(gpte))
> -		goto no_present;
> +		return true;
>
>  	if (!(gpte & PT_ACCESSED_MASK))
> -		goto no_present;
> +		return true;
>
>  	return false;

A comment (or a name change) is needed to indicate that we're not
checking for an invalid gpte, just invalid for caching in an spte.

> +}
>
>

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

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