From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: [PATCH] Make new PCI device probe work with older
	hypervisors
Date: Mon, 07 Jul 2008 13:55:58 +0100
Message-ID: <C497D0EE.23A18%keir.fraser@eu.citrix.com>
References: <18546.3791.24322.404685@gargle.gargle.HOWL>
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To: Espen Skoglund <espen.skoglund@netronome.com>, xen-devel@lists.xensource.com
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Thanks. One thing also -- do old dom0 kernels work with new Xen (i.e., do we
have compatibility both ways)?

 -- Keir

On 7/7/08 13:40, "Espen Skoglund" <espen.skoglund@netronome.com> wrote:

> Be a bit more forgiving if hyervisor does not implement the
> manage_pci_add hypercall.
> 
> Signed-off-by: Espen Skoglund <espen.skoglund@netronome.com>
> 
> --
> diff -r bb937c2f7382 drivers/xen/core/pci.c
> --- a/drivers/xen/core/pci.c Fri Jul 04 17:55:07 2008 +0100
> +++ b/drivers/xen/core/pci.c Mon Jul 07 13:34:32 2008 +0100
> @@ -19,7 +19,7 @@
> manage_pci.devfn = pci_dev->devfn;
>  
> r = HYPERVISOR_physdev_op(PHYSDEVOP_manage_pci_add, &manage_pci);
> - if (r)
> + if (r && r != -ENOSYS)
> return r;
>  
> r = pci_bus_probe(dev);
> 
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