Re: [PATCH v2 1/7] iommu/io-pgtable: Introduce dynamic io-pgtable fmt registration

[Georgi Djakov]

Hi Isaac,

On 22.12.20 2:44, Isaac J. Manjarres wrote:
> The io-pgtable code constructs an array of init functions for each
> page table format at compile time. This is not ideal, as this
> increases the footprint of the io-pgtable code, as well as prevents
> io-pgtable formats from being built as kernel modules.
>
> In preparation for modularizing the io-pgtable formats, switch to a
> dynamic registration scheme, where each io-pgtable format can register
> their init functions with the io-pgtable code at boot or module
> insertion time.
>
> Signed-off-by: Isaac J. Manjarres <isaacm@xxxxxxxxxxxxxx>
> ---
>   drivers/iommu/io-pgtable-arm-v7s.c | 34 +++++++++++++-
>   drivers/iommu/io-pgtable-arm.c     | 90 ++++++++++++++++++++++++++----------
>   drivers/iommu/io-pgtable.c         | 94 ++++++++++++++++++++++++++++++++------
>   include/linux/io-pgtable.h         | 51 +++++++++++++--------
>   4 files changed, 209 insertions(+), 60 deletions(-)
>
> diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
> index 1d92ac9..89aad2f 100644
> --- a/drivers/iommu/io-pgtable-arm-v7s.c
> +++ b/drivers/iommu/io-pgtable-arm-v7s.c
> @@ -28,6 +28,7 @@
[..]
> +static int __init arm_lpae_init(void)
> +{
> +	int ret, i;
> +
> +	for (i = 0; i < ARRAY_SIZE(io_pgtable_arm_lpae_init_fns); i++) {
> +		ret = io_pgtable_ops_register(&io_pgtable_arm_lpae_init_fns[i]);
> +		if (ret < 0) {
> +			pr_err("Failed to register ARM LPAE fmt: %d\n");

I guess we want to print the format here?

Thanks,
Georgi