linux-kernel - Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support

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Date:   Mon, 15 May 2017 16:13:49 +0200
From:   Juergen Gross <jgross@...e.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Andy Lutomirski <luto@...capital.net>,
        Dan Williams <dan.j.williams@...el.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCHv5, REBASED 8/9] x86: Enable 5-level paging support

On 15/05/17 16:11, Kirill A. Shutemov wrote:
> On Mon, May 15, 2017 at 02:31:00PM +0200, Juergen Gross wrote:
>>> diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
>>> index 027987638e98..12205e6dfa59 100644
>>> --- a/arch/x86/xen/Kconfig
>>> +++ b/arch/x86/xen/Kconfig
>>> @@ -5,6 +5,7 @@
>>>  config XEN
>>>  	bool "Xen guest support"
>>>  	depends on PARAVIRT
>>> +	depends on !X86_5LEVEL
>>
>> I'd rather put this under "config XEN_PV".
> 
> Makes sense.
> 
> ----------------------8<----------------------------
> 
> From 422a980c748a5b84a013258eb7c00d61edc34492 Mon Sep 17 00:00:00 2001
> From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
> Date: Sat, 5 Nov 2016 03:24:03 +0300
> Subject: [PATCHv6 8/9] x86: Enable 5-level paging support
> 
> Most of things are in place and we can enable support of 5-level paging.
> 
> The patch makes XEN_PV dependent on !X86_5LEVEL. XEN_PV is not ready to
> work with 5-level paging.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

Xen part:
Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen