[PATCH 21/28] xtensa: introduce arch_zone_limits_init()
From: Mike Rapoport <rppt@kernel.org>
Date: 2025-12-28 12:45:18
Also in:
linux-alpha, linux-cxl, linux-doc, linux-m68k, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linux-um, lkml, loongarch, sparclinux
Subsystem:
tensilica xtensa port (xtensa), the rest · Maintainers:
Chris Zankel, Max Filippov, Linus Torvalds
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org> Move calculations of zone limits to a dedicated arch_zone_limits_init() function. Later MM core will use this function as an architecture specific callback during nodes and zones initialization and thus there won't be a need to call free_area_init() from every architecture. Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> --- arch/xtensa/mm/init.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index cc52733a0649..60299f359a3c 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c@@ -116,15 +116,19 @@ static void __init print_vm_layout(void) (unsigned long)(__bss_stop - __bss_start) >> 10); } -void __init zones_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) { - /* All pages are DMA-able, so we put them all in the DMA zone. */ - unsigned long max_zone_pfn[MAX_NR_ZONES] = { - [ZONE_NORMAL] = max_low_pfn, + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; #ifdef CONFIG_HIGHMEM - [ZONE_HIGHMEM] = max_pfn, + max_zone_pfns[ZONE_HIGHMEM] = max_pfn; #endif - }; +} + +void __init zones_init(void) +{ + unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0, }; + + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); print_vm_layout(); }
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