Re: [PATCH 4/6] test: dm: part: Check the GPT layout for large sector sizes

On 2026-07-31T12:39:59, Alexey Charkov <[email protected]> wrote:
> test: dm: part: Check the GPT layout for large sector sizes
>
> Add a test that runs gpt_fill_header() and gpt_fill_pte() over a range of
> block sizes and checks that the partition entry array is sized and placed
> consistently, in particular that the backup array ends exactly where the
> backup GPT header begins.
>
> Neither function performs any block I/O, so the test builds a synthetic
> struct blk_desc rather than needing a block device with a configurable
> block size. The expected array size is taken from the GPT header fields
> rather than from GPT_ENTRY_NUMBERS, so the test still holds for builds
> with a non-default CONFIG_EFI_PARTITION_ENTRIES_NUMBERS, such as
> ARCH_SUNXI with 56 entries.
>
> Without the preceding fixes this fails on the first block size other than
> 512:
>
>   test/dm/part.c:313, dm_test_part_gpt_blksz():
>       entry_lba + pte_blks == first_lba: Expected 0x12 (18), got 0x22 (34)
>
> Signed-off-by: Alexey Charkov <[email protected]>
> Acked-by: Ilias Apalodimas <[email protected]>
>
> test/dm/part.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 100 insertions(+)

Reviewed-by: Simon Glass <[email protected]>