linux-kernel - Re: [PATCH 03/12] evtchn delivery on HVM

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Date:	Tue, 18 May 2010 10:43:20 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	Don Dutile <ddutile@...hat.com>,
	Sheng Yang <sheng@...ux.intel.com>
Subject: Re: [PATCH 03/12] evtchn delivery on HVM

On 05/18/2010 03:22 AM, Stefano Stabellini wrote:
> From: Sheng Yang <sheng@...ux.intel.com>
>
> Set the callback to receive evtchns from Xen, using the
> callback vector delivery mechanism.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> Signed-off-by: Sheng Yang <sheng@...ux.intel.com>
> ---
>  arch/x86/xen/enlighten.c         |   35 +++++++++++++++++++++++++++++++++++
>  drivers/xen/events.c             |   31 ++++++++++++++++++++++++-------
>  include/xen/events.h             |    3 +++
>  include/xen/hvm.h                |    9 +++++++++
>  include/xen/interface/features.h |    3 +++
>  5 files changed, 74 insertions(+), 7 deletions(-)
>
> diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
> index 87a3b10..502c4f8 100644
> --- a/arch/x86/xen/enlighten.c
> +++ b/arch/x86/xen/enlighten.c
> @@ -37,8 +37,11 @@
>  #include <xen/interface/vcpu.h>
>  #include <xen/interface/memory.h>
>  #include <xen/interface/hvm/hvm_op.h>
> +#include <xen/interface/hvm/params.h>
>  #include <xen/features.h>
>  #include <xen/page.h>
> +#include <xen/hvm.h>
> +#include <xen/events.h>
>  #include <xen/hvc-console.h>
>  
>  #include <asm/paravirt.h>
> @@ -79,6 +82,8 @@ struct shared_info xen_dummy_shared_info;
>  
>  void *xen_initial_gdt;
>  
> +int xen_have_vector_callback;
>   

BTW, this can be a __read_mostly.

    J
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