linux-kernel - Re: [PATCH 02/22] KVM: MMU: Make tdp

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Message-ID: <4BD6D329.5060204@redhat.com>
Date:	Tue, 27 Apr 2010 15:06:01 +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 02/22] KVM: MMU: Make tdp_enabled a mmu-context parameter

On 04/27/2010 01:38 PM, Joerg Roedel wrote:
> This patch changes the tdp_enabled flag from its global
> meaning to the mmu-context and renames it to direct_map
> there. This is necessary for Nested SVM with emulation of
> Nested Paging where we need an extra MMU context to shadow
> the Nested Nested Page Table.
>
> @@ -2423,6 +2424,7 @@ static int init_kvm_softmmu(struct kvm_vcpu *vcpu)
>   		r = paging32_init_context(vcpu);
>
>   	vcpu->arch.mmu.base_role.cr4_pae = !!is_pae(vcpu);
> +	vcpu->arch.mmu.direct_map        = false;
>
>   	return r;
>   }
>    

We could also set direct_map = true for real mode, would probably 
simplify some later logic (can be cleaned up later, no need to update now).

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

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