linux-kernel - Re: [Xen-devel] [PATCH] xen: only check xen_platform_pci

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Date:	Tue, 27 Mar 2012 13:36:37 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Igor Mammedov <imammedo@...hat.com>, linux-kernel@...r.kernel.org,
	axboe@...nel.dk, davem@...emloft.net
Cc:	xen-devel@...ts.xensource.com, Stefano.Stabellini@...citrix.com
Subject: Re: [Xen-devel] [PATCH] xen: only check xen_platform_pci_unplug if
 hvm

On Tue, Mar 27, 2012 at 07:31:08PM +0200, Igor Mammedov wrote:
> commit b9136d207f08
>   xen: initialize platform-pci even if xen_emul_unplug=never
> 
> breaks blkfront/netfront by not loading them because of
> xen_platform_pci_unplug=0 and it is never set for PV guest.

Looks good to me.

If the networking/block maintainers don't object I can push this out to
Linus when rc1 comes out.

> 
> Signed-off-by: Andrew Jones <drjones@...hat.com>
> Signed-off-by: Igor Mammedov <imammedo@...hat.com>
> ---
>  drivers/block/xen-blkfront.c |    2 +-
>  drivers/net/xen-netfront.c   |    2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
> index d5e1ab9..98cbeba 100644
> --- a/drivers/block/xen-blkfront.c
> +++ b/drivers/block/xen-blkfront.c
> @@ -1475,7 +1475,7 @@ static int __init xlblk_init(void)
>  	if (!xen_domain())
>  		return -ENODEV;
>  
> -	if (!xen_platform_pci_unplug)
> +	if (xen_hvm_domain() && !xen_platform_pci_unplug)
>  		return -ENODEV;
>  
>  	if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) {
> diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
> index 663b32c..0ebbb19 100644
> --- a/drivers/net/xen-netfront.c
> +++ b/drivers/net/xen-netfront.c
> @@ -1965,7 +1965,7 @@ static int __init netif_init(void)
>  	if (xen_initial_domain())
>  		return 0;
>  
> -	if (!xen_platform_pci_unplug)
> +	if (xen_hvm_domain() && !xen_platform_pci_unplug)
>  		return -ENODEV;
>  
>  	printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n");
> -- 
> 1.7.5
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@...ts.xen.org
> http://lists.xen.org/xen-devel
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