The patch titled Subject: include/linux/mmzone.h: remove examples from enum zone_type comment has been added to the -mm tree. Its filename is mm-remove-examples-from-enum-zone_type-comment.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/mm-remove-examples-from-enum-zone_type-comment.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/mm-remove-examples-from-enum-zone_type-comment.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx> Subject: include/linux/mmzone.h: remove examples from enum zone_type comment We can't really list every setup in common code. On top of that they are unlikely to stay true for long as things change in the arch trees independently of this comment. Link: https://lkml.kernel.org/r/20201119175400.9995-8-nsaenzjulienne@xxxxxxx Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx> Suggested-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/mmzone.h | 20 -------------------- 1 file changed, 20 deletions(-) --- a/include/linux/mmzone.h~mm-remove-examples-from-enum-zone_type-comment +++ a/include/linux/mmzone.h @@ -355,26 +355,6 @@ enum zone_type { * DMA mask is assumed when ZONE_DMA32 is defined. Some 64-bit * platforms may need both zones as they support peripherals with * different DMA addressing limitations. - * - * Some examples: - * - * - i386 and x86_64 have a fixed 16M ZONE_DMA and ZONE_DMA32 for the - * rest of the lower 4G. - * - * - arm only uses ZONE_DMA, the size, up to 4G, may vary depending on - * the specific device. - * - * - arm64 has a fixed 1G ZONE_DMA and ZONE_DMA32 for the rest of the - * lower 4G. - * - * - powerpc only uses ZONE_DMA, the size, up to 2G, may vary - * depending on the specific device. - * - * - s390 uses ZONE_DMA fixed to the lower 2G. - * - * - ia64 and riscv only use ZONE_DMA32. - * - * - parisc uses neither. */ #ifdef CONFIG_ZONE_DMA ZONE_DMA, _ Patches currently in -mm which might be from nsaenzjulienne@xxxxxxx are mm-remove-examples-from-enum-zone_type-comment.patch