linux-kernel - Re: [Xen-devel] [V2 PATCH 1/1] PVH: set EFER.NX and EFER.SCE

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Message-ID: <54072B52.3070104@citrix.com>
Date:	Wed, 3 Sep 2014 15:53:06 +0100
From:	Andrew Cooper <andrew.cooper3@...rix.com>
To:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Mukesh Rathor <mukesh.rathor@...cle.com>
CC:	<xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [V2 PATCH 1/1] PVH: set EFER.NX and EFER.SCE

On 03/09/14 15:49, Boris Ostrovsky wrote:
> On 09/03/2014 09:58 AM, David Vrabel wrote:
>
>>   #endif
>> diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
>> index 485b695..a64b464 100644
>> --- a/arch/x86/xen/xen-head.S
>> +++ b/arch/x86/xen/xen-head.S
>> @@ -47,6 +47,40 @@ ENTRY(startup_xen)
>>         __FINIT
>>   +#ifdef CONFIG_XEN_PVH
>> +#ifdef CONFIG_X86_64
>
> CONFIG_XEN_PVH implies CONFIG_X86_64.
>
> -boris

Only because PVH is currently mal-specified and limited to 64bit.  It
will certainly not be true when PVH gains 32bit support.

~Andrew

>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@...ts.xen.org
> http://lists.xen.org/xen-devel

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