linux-kernel - Re: [PATCH v3 5/7] vfio: Use new interfaces for MSI/MSI-X enablement

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Message-ID: <1389368751.3209.294.camel@bling.home>
Date:	Fri, 10 Jan 2014 08:45:51 -0700
From:	Alex Williamson <alex.williamson@...hat.com>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v3 5/7] vfio: Use new interfaces for MSI/MSI-X enablement

On Fri, 2014-01-10 at 08:42 +0100, Alexander Gordeev wrote:
> Signed-off-by: Alexander Gordeev <agordeev@...hat.com>

Thanks for the changes.

Acked-by: Alex Williamson <alex.williamson@...hat.com>

> ---
>  drivers/vfio/pci/vfio_pci_intrs.c |   12 ++++++++----
>  1 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
> index 641bc87..4a9db1d 100644
> --- a/drivers/vfio/pci/vfio_pci_intrs.c
> +++ b/drivers/vfio/pci/vfio_pci_intrs.c
> @@ -482,15 +482,19 @@ static int vfio_msi_enable(struct vfio_pci_device *vdev, int nvec, bool msix)
>  		for (i = 0; i < nvec; i++)
>  			vdev->msix[i].entry = i;
>  
> -		ret = pci_enable_msix(pdev, vdev->msix, nvec);
> -		if (ret) {
> +		ret = pci_enable_msix_range(pdev, vdev->msix, 1, nvec);
> +		if (ret < nvec) {
> +			if (ret > 0)
> +				pci_disable_msix(pdev);
>  			kfree(vdev->msix);
>  			kfree(vdev->ctx);
>  			return ret;
>  		}
>  	} else {
> -		ret = pci_enable_msi_block(pdev, nvec);
> -		if (ret) {
> +		ret = pci_enable_msi_range(pdev, 1, nvec);
> +		if (ret < nvec) {
> +			if (ret > 0)
> +				pci_disable_msi(pdev);
>  			kfree(vdev->ctx);
>  			return ret;
>  		}
> -- 
> 1.7.7.6
> 



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