Messages in this thread Patch in this message | | | From | Nicolas Saenz Julienne <> | Subject | [PATCH v2 5/5] mm: Update DMA zones description | Date | Sat, 10 Oct 2020 17:12:35 +0200 |
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The default behavior for arm64 changed, so reflect that.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> --- include/linux/mmzone.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index fb3bf696c05e..4ee2306351b9 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -363,8 +363,9 @@ enum zone_type { * - 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. + * - arm64 uses a single 4GB ZONE_DMA, except on the Raspberry Pi 4, + * in which ZONE_DMA covers the first GB and ZONE_DMA32 the rest of + * the lower 4GB. * * - powerpc only uses ZONE_DMA, the size, up to 2G, may vary * depending on the specific device. -- 2.28.0
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