xtensa: remove ZONE_DMA (fe278d1a) · Commits · 戴 / test

ZONE_DMA is intended for magic < 32-bit pools (usually ISA DMA), which isn't required on xtensa. Move all the non-highmem memory into ZONE_NORMAL instead to match other architectures. Signed-off-by:

Christoph Hellwig <hch@lst.de> Signed-off-by:

Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/Kconfig

+0 −3

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0
		config ZONE_DMA
		def_bool y

		config XTENSA
		def_bool y
		select ARCH_HAS_SG_CHAIN

arch/xtensa/mm/init.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -71,7 +71,7 @@ void __init zones_init(void)
		{
		/* All pages are DMA-able, so we put them all in the DMA zone. */
		unsigned long zones_size[MAX_NR_ZONES] = {
		[ZONE_DMA] = max_low_pfn - ARCH_PFN_OFFSET,
		[ZONE_NORMAL] = max_low_pfn - ARCH_PFN_OFFSET,
		#ifdef CONFIG_HIGHMEM
		[ZONE_HIGHMEM] = max_pfn - max_low_pfn,
		#endif

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