RE: [PATCH v4 2/3] iommufd: Move iommufd_sw_msi and related functions to driver.c

[Tian, Kevin]

> From: Nicolin Chen <nicolinc@xxxxxxxxxx>
> Sent: Friday, March 7, 2025 5:01 AM
> 
> To provide the iommufd_sw_msi() to the iommu core that is under a
> different
> Kconfig, move it and its related functions to driver.c. Then, stub it into
> the iommu-priv header. The iommufd_sw_msi_install() continues to be used
> by
> iommufd internal, so put it in the private header.
> 
> Since this affects the module size, here is before-n-after size comparison:
> [Before]
>    text	   data	    bss	    dec	    hex	filename
>   18797	    848	     56	  19701	   4cf5	drivers/iommu/iommufd/device.o
>     722	     44	      0	    766	    2fe	drivers/iommu/iommufd/driver.o
> [After]
>    text	   data	    bss	    dec	    hex	filename
>   17671	    808	     56	  18535	   4867	drivers/iommu/iommufd/device.o
>    1900	    100	      0	   2000	    7d0	drivers/iommu/iommufd/driver.o
> 
> Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>