linux-kernel - Re: [PATCH 1/8] xen/x86: Remove PVH support

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Date:   Tue, 18 Oct 2016 15:46:57 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        david.vrabel@...rix.com
Cc:     roger.pau@...rix.com, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH 1/8] xen/x86: Remove PVH support

On 14/10/16 20:05, Boris Ostrovsky wrote:
> We are replacing existing PVH guests with new implementation.
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

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

with the following addressed:

> diff --git a/include/xen/xen.h b/include/xen/xen.h
> index f0f0252..d0f9684 100644
> --- a/include/xen/xen.h
> +++ b/include/xen/xen.h
> @@ -29,17 +29,6 @@ enum xen_domain_type {
>  #define xen_initial_domain()	(0)
>  #endif	/* CONFIG_XEN_DOM0 */
>  
> -#ifdef CONFIG_XEN_PVH
> -/* This functionality exists only for x86. The XEN_PVHVM support exists
> - * only in x86 world - hence on ARM it will be always disabled.
> - * N.B. ARM guests are neither PV nor HVM nor PVHVM.
> - * It's a bit like PVH but is different also (it's further towards the H
> - * end of the spectrum than even PVH).
> - */
> -#include <xen/features.h>
> -#define xen_pvh_domain() (xen_pv_domain() && \
> -			  xen_feature(XENFEAT_auto_translated_physmap))
> -#else
>  #define xen_pvh_domain()	(0)

Any reason you don't remove this, too (together with its last user in
arch/x86/xen/grant-table.c) ?


Juergen