Re: [Xen-devel] [PATCH v3 7/9] xen/gntdev: Add initial support for dma-buf UAPI

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 06/12/2018 09:41 AM, Oleksandr Andrushchenko wrote:

> diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
> index a09db23e9663..e82660d81d7e 100644
> --- a/drivers/xen/gntdev.c
> +++ b/drivers/xen/gntdev.c
> @@ -48,6 +48,9 @@
>   #include <asm/xen/hypercall.h>
>   
>   #include "gntdev-common.h"
> +#ifdef CONFIG_XEN_GNTDEV_DMABUF
> +#include "gntdev-dmabuf.h"
> +#endif
>   
>   MODULE_LICENSE("GPL");
>   MODULE_AUTHOR("Derek G. Murray <Derek.Murray@xxxxxxxxxxxx>, "
> @@ -566,6 +569,15 @@ static int gntdev_open(struct inode *inode, struct file 
> *flip)
>         INIT_LIST_HEAD(&priv->freeable_maps);
>         mutex_init(&priv->lock);
>   
> +#ifdef CONFIG_XEN_GNTDEV_DMABUF
> +       priv->dmabuf_priv = gntdev_dmabuf_init();
> +       if (IS_ERR(priv->dmabuf_priv)) {
> +               ret = PTR_ERR(priv->dmabuf_priv);
> +               kfree(priv);
> +               return ret;
> +       }
> +#endif
> +
>         if (use_ptemod) {
>                 priv->mm = get_task_mm(current);
>                 if (!priv->mm) {
> @@ -616,8 +628,13 @@ static int gntdev_release(struct inode *inode, struct file 
> *flip)
>         WARN_ON(!list_empty(&priv->freeable_maps));
>         mutex_unlock(&priv->lock);
>   
> +#ifdef CONFIG_XEN_GNTDEV_DMABUF
> +       gntdev_dmabuf_fini(priv->dmabuf_priv);
> +#endif
> +
>         if (use_ptemod)
>                 mmu_notifier_unregister(&priv->mn, priv->mm);
> +
>         kfree(priv);
>         return 0;
>   }
> @@ -987,6 +1004,107 @@ static long gntdev_ioctl_grant_copy(struct gntdev_priv 
> *priv, void __user *u)
>         return ret;
>   }
>   
> +#ifdef CONFIG_XEN_GNTDEV_DMABUF
> +static long
> +gntdev_ioctl_dmabuf_exp_from_refs(struct gntdev_priv *priv,
> +                                 struct ioctl_gntdev_dmabuf_exp_from_refs 
> __user *u)

Didn't we agree that this code moves to gntdev-dmabuf.c ?

-boris


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