linux-kernel - Re: [PATCH 13/22] KVM: X86: Add kvm_read_guest_page

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Message-ID: <4BD6E956.7070005@redhat.com>
Date:	Tue, 27 Apr 2010 16:40:38 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Joerg Roedel <joerg.roedel@....com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/22] KVM: X86: Add kvm_read_guest_page_tdp function

On 04/27/2010 03:42 PM, Avi Kivity wrote:
>
>> +{
>> +    gfn_t real_gfn;
>> +    gpa_t gpa;
>> +
>> +    *error   = 0;
>> +    gpa      = gfn<<  PAGE_SHIFT;

This overflows too :)

Use gfn_to_gpa().

>> +    real_gfn = mmu->translate_gpa(vcpu, gpa, error);
>
> Overflow: sizeof(gpa) > sizeof(gfn).

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

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