Re: [PATCH iommufd] iommufd: Make vfio_compat's unmap succeed if the range is already empty

On Tue, Nov 04, 2025 at 02:11:49PM -0400, Jason Gunthorpe wrote:

iommufd returns ENOENT when attempting to unmap a range that is already empty, while vfio type1 returns success. Fix vfio_compat to match.

Fixes: d624d6652a65 ("iommufd: vfio container FD ioctl compatibility") Reported-by: Alex Mastro amastro@fb.com Closes: https://lore.kernel.org/r/aP0S5ZF9l3sWkJ1G@devgpu012.nha5.facebook.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com

Reviewed-by: Nicolin Chen nicolinc@nvidia.com