linux-kernel - Re: [GIT PULL] xen: Check NX state before setting up GDT mapping

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Message-ID: <4ABA7119.6000307@goop.org>
Date:	Wed, 23 Sep 2009 12:03:53 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Ingo Molnar <mingo@...hat.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Stable Kernel <stable@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Xen-devel <xen-devel@...ts.xensource.com>
Subject: Re: [GIT PULL] xen: Check NX state before setting up GDT mapping

On 09/23/09 05:36, Ingo Molnar wrote:
>> +#ifdef CONFIG_X86_64
>> +	/* Work out if we support NX */
>> +	check_efer();
>> +#endif
>> +
>>     
> btw., this #ifdef could sure be eliminated, right?
>   

check_efer() is only defined on x86-64 and all its existing callsites
have a similar #ifdef.  NX setup is an area which could do with a bit of
hitting with the unification stick.

    J
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