linux-kernel - Re: [PATCH v2 7/9] vfio: Use pci_enable_msi_range() and pci_enable_msix

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140129213655.GC16825@google.com>
Date:	Wed, 29 Jan 2014 14:36:55 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Alex Williamson <alex.williamson@...hat.com>,
	kvm@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 7/9] vfio: Use pci_enable_msi_range() and
 pci_enable_msix_range()

On Fri, Jan 17, 2014 at 05:02:21PM +0100, Alexander Gordeev wrote:
> As result deprecation of MSI-X/MSI enablement functions
> pci_enable_msix() and pci_enable_msi_block() all drivers
> using these two interfaces need to be updated to use the
> new pci_enable_msi_range() and pci_enable_msix_range()
> interfaces.
> 
> Signed-off-by: Alexander Gordeev <agordeev@...hat.com>
> Acked-by: Alex Williamson <alex.williamson@...hat.com>

Applied to my pci/msi branch, thanks!

> ---
>  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
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/