The sbi_mpxy_register_channel() currently performs ceiling division by
PAGE_SIZE but stores the resulting page count in mpxy_shmem_size. All
consumers interpret mpxy_shmem_size as a byte count, so channels requiring
more than one page get an undersized shared memory value.
Address the above issue by using ROUNDUP() to keep the rounded value in
bytes.
Fixes: ec09918426 ("lib: sbi: Update MPXY framework and SBI extension as per latest spec")
Signed-off-by: Shibo Zhu <3499129952@qq.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/tencent_14AA3BA0083001905C262A5CD64E442FC205@qq.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Shibo Zhu
2de7dfb681