linux-kernel - Re: [Xen-devel] [PATCH 3/5] x86/xen: put setup.c, mmu.c and p2m.c under CONFIG_XEN

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Date:   Wed, 1 Mar 2017 07:25:25 +0100
From:   Juergen Gross <jgross@...e.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        xen-devel@...ts.xenproject.org
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>, x86@...nel.org,
        Andrew Jones <drjones@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [Xen-devel] [PATCH 3/5] x86/xen: put setup.c, mmu.c and p2m.c
 under CONFIG_XEN_PV

On 24/02/17 17:14, Vitaly Kuznetsov wrote:
> These three files (mmu.c, p2m.c, setup.c) are mostly required to support
> PV guests, in fact p2m.c and setup.c have no code for PVHVM at all. mmu.c
> has some, split the file into mmu.c, mmu_pv.c and mmu_hvm.c.
> 
> Some additional changes are required:
> - In the balloon driver we can't use xen_start_info, xen_released_pages
>   and xen_extra_mem it is PV-only. Decorate it with #ifdef CONFIG_XEN_PV
> 
> - Some PV-only functions are used by drivers and for PVHVM guests these
>   functions have 'if (xen_feature(XENFEAT_auto_translated_physmap))' check
>   in the beginning. Create required stubs for PVHVM-only builds.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>

And again: split the patch up, please.


Juergen