[Xen-devel] Re: [GIT PULL] xen: Check NX state before setting up

To:	Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject:	[Xen-devel] Re: [GIT PULL] xen: Check NX state before setting up GDT mapping
From:	Ingo Molnar <mingo@xxxxxxx>
Date:	Wed, 23 Sep 2009 14:36:16 +0200
Cc:	Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Stable Kernel <stable@xxxxxxxxxx>
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* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
> index 0dd0c2c..5d701bf 100644
> --- a/arch/x86/xen/enlighten.c
> +++ b/arch/x86/xen/enlighten.c
> @@ -1083,6 +1083,11 @@ asmlinkage void __init xen_start_kernel(void)
>  
>       __supported_pte_mask |= _PAGE_IOMAP;
>  
> +#ifdef CONFIG_X86_64
> +     /* Work out if we support NX */
> +     check_efer();
> +#endif
> +

btw., this #ifdef could sure be eliminated, right?

        Ingo

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[Xen-devel] Re: [GIT PULL] xen: Check NX state before setting up GDT map