linux-kernel - Re: [PATCH 24/29] KVM: MMU: Track NX state in struct kvm

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Message-ID: <4C8C89F1.6020008@redhat.com>
Date:	Sun, 12 Sep 2010 10:06:09 +0200
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 24/29] KVM: MMU: Track NX state in struct kvm_mmu

  On 09/10/2010 06:31 PM, Joerg Roedel wrote:
> With Nested Paging emulation the NX state between the two
> MMU contexts may differ. To make sure that always the right
> fault error code is recorded this patch moves the NX state
> into struct kvm_mmu so that the code can distinguish between
> L1 and L2 NX state.
>
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -259,6 +259,8 @@ struct kvm_mmu {
>   	u64 *lm_root;
>   	u64 rsvd_bits_mask[2][4];
>
> +	bool nx;
> +
>   	u64 pdptrs[4]; /* pae */
>   };

This is redundant with mmu->base_role.nx.  Please post a follow on patch 
to use that instead.

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

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