linux-kernel - Re: [PATCH V4 1/3] vdpa: introduce config op to get valid iova range

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: <20201025093404.GC189473@mtl-vdi-166.wap.labs.mlnx>
Date:   Sun, 25 Oct 2020 11:34:04 +0200
From:   Eli Cohen <elic@...dia.com>
To:     Jason Wang <jasowang@...hat.com>
CC:     "mst@...hat.com" <mst@...hat.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "rob.miller@...adcom.com" <rob.miller@...adcom.com>,
        "lingshan.zhu@...el.com" <lingshan.zhu@...el.com>,
        "eperezma@...hat.com" <eperezma@...hat.com>,
        "lulu@...hat.com" <lulu@...hat.com>,
        Shahaf Shuler <shahafs@...lanox.com>,
        "hanand@...inx.com" <hanand@...inx.com>,
        "mhabets@...arflare.com" <mhabets@...arflare.com>,
        "gdawar@...inx.com" <gdawar@...inx.com>,
        "saugatm@...inx.com" <saugatm@...inx.com>,
        "vmireyno@...vell.com" <vmireyno@...vell.com>,
        "zhangweining@...jie.com.cn" <zhangweining@...jie.com.cn>,
        "eli@...lanox.com" <eli@...lanox.com>
Subject: Re: [PATCH V4 1/3] vdpa: introduce config op to get valid iova range

On Fri, Oct 23, 2020 at 09:00:41AM +0000, Jason Wang wrote:
> This patch introduce a config op to get valid iova range from the vDPA
> device.
> 
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Reviewed-by: Eli Cohen <elic@...dia.com>

> ---
>  include/linux/vdpa.h | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
> index eae0bfd87d91..30bc7a7223bb 100644
> --- a/include/linux/vdpa.h
> +++ b/include/linux/vdpa.h
> @@ -52,6 +52,16 @@ struct vdpa_device {
>  	int nvqs;
>  };
>  
> +/**
> + * vDPA IOVA range - the IOVA range support by the device
> + * @first: start of the IOVA range
> + * @last: end of the IOVA range
> + */
> +struct vdpa_iova_range {
> +	u64 first;
> +	u64 last;
> +};
> +
>  /**
>   * vDPA_config_ops - operations for configuring a vDPA device.
>   * Note: vDPA device drivers are required to implement all of the
> @@ -151,6 +161,10 @@ struct vdpa_device {
>   * @get_generation:		Get device config generation (optional)
>   *				@vdev: vdpa device
>   *				Returns u32: device generation
> + * @get_iova_range:		Get supported iova range (optional)
> + *				@vdev: vdpa device
> + *				Returns the iova range supported by
> + *				the device.
>   * @set_map:			Set device memory mapping (optional)
>   *				Needed for device that using device
>   *				specific DMA translation (on-chip IOMMU)
> @@ -216,6 +230,7 @@ struct vdpa_config_ops {
>  	void (*set_config)(struct vdpa_device *vdev, unsigned int offset,
>  			   const void *buf, unsigned int len);
>  	u32 (*get_generation)(struct vdpa_device *vdev);
> +	struct vdpa_iova_range (*get_iova_range)(struct vdpa_device *vdev);
>  
>  	/* DMA ops */
>  	int (*set_map)(struct vdpa_device *vdev, struct vhost_iotlb *iotlb);
> -- 
> 2.20.1
>