On 05/11/16 08:10, Kirti Wankhede wrote:
> Updated vfio_platform_common.c file to use
> vfio_set_irqs_validate_and_prepare()
>
> Signed-off-by: Kirti Wankhede <kwankhede@xxxxxxxxxx>
> Signed-off-by: Neo Jia <cjia@xxxxxxxxxx>
> Change-Id: Id87cd6b78ae901610b39bf957974baa6f40cd7b0
> ---
> drivers/vfio/platform/vfio_platform_common.c | 31 +++++++---------------------
> 1 file changed, 8 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c
> index d78142830754..4c27f4be3c3d 100644
> --- a/drivers/vfio/platform/vfio_platform_common.c
> +++ b/drivers/vfio/platform/vfio_platform_common.c
> @@ -364,36 +364,21 @@ static long vfio_platform_ioctl(void *device_data,
> struct vfio_irq_set hdr;
> u8 *data = NULL;
> int ret = 0;
> + size_t data_size = 0;
>
> minsz = offsetofend(struct vfio_irq_set, count);
>
> if (copy_from_user(&hdr, (void __user *)arg, minsz))
> return -EFAULT;
>
> - if (hdr.argsz < minsz)
> - return -EINVAL;
> -
> - if (hdr.index >= vdev->num_irqs)
> - return -EINVAL;
> -
> - if (hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK |
> - VFIO_IRQ_SET_ACTION_TYPE_MASK))
> - return -EINVAL;
> -
> - if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) {
> - size_t size;
> -
> - if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL)
> - size = sizeof(uint8_t);
> - else if (hdr.flags & VFIO_IRQ_SET_DATA_EVENTFD)
> - size = sizeof(int32_t);
> - else
> - return -EINVAL;
> -
> - if (hdr.argsz - minsz < size)
> - return -EINVAL;
> + ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs,
> + vdev->num_irqs, &data_size);
The patch does not change this but I am still curious:
is not the second vdev->num_irqs supposed to be one of
VFIO_PCI_INTX_IRQ_INDEX..VFIO_PCI_NUM_IRQS, not the actual number of
interrupt vectors (as in vfio-pci)?
> + if (ret)
> + return ret;
>
> - data = memdup_user((void __user *)(arg + minsz), size);
> + if (data_size) {
> + data = memdup_user((void __user *)(arg + minsz),
> + data_size);
> if (IS_ERR(data))
> return PTR_ERR(data);
> }
>
--
Alexey
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
