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author | Mike Rapoport <rppt@linux.vnet.ibm.com> | 2018-07-04 09:28:16 +0300 |
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committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-07-29 10:48:18 +0200 |
commit | 1008a11590b966b469e60dc3756c9226a685ce12 (patch) | |
tree | d85fdc45296edccbb78833ffd69fb81d2cb8251e /arch/m68k/mm/motorola.c | |
parent | 9e09221957c5cc6b70596c888651af0c7b052bd9 (diff) | |
download | linux-1008a11590b966b469e60dc3756c9226a685ce12.tar.gz linux-1008a11590b966b469e60dc3756c9226a685ce12.tar.bz2 linux-1008a11590b966b469e60dc3756c9226a685ce12.zip |
m68k: switch to MEMBLOCK + NO_BOOTMEM
In m68k the physical memory is described by [memory_start, memory_end] for
!MMU variant and by m68k_memory array of memory ranges for the MMU version.
This information is directly use to register the physical memory with
memblock.
The reserve_bootmem() calls are replaced with memblock_reserve() and the
bootmap bitmap allocation is simply dropped.
Since the MMU variant creates early mappings only for the small part of the
memory we force bottom-up allocations in memblock.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/mm/motorola.c')
-rw-r--r-- | arch/m68k/mm/motorola.c | 35 |
1 files changed, 11 insertions, 24 deletions
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c index e490ecc7842c..4e17ecb5928a 100644 --- a/arch/m68k/mm/motorola.c +++ b/arch/m68k/mm/motorola.c @@ -19,6 +19,7 @@ #include <linux/types.h> #include <linux/init.h> #include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/gfp.h> #include <asm/setup.h> @@ -208,7 +209,7 @@ void __init paging_init(void) { unsigned long zones_size[MAX_NR_ZONES] = { 0, }; unsigned long min_addr, max_addr; - unsigned long addr, size, end; + unsigned long addr; int i; #ifdef DEBUG @@ -253,34 +254,20 @@ void __init paging_init(void) min_low_pfn = availmem >> PAGE_SHIFT; max_pfn = max_low_pfn = max_addr >> PAGE_SHIFT; - for (i = 0; i < m68k_num_memory; i++) { - addr = m68k_memory[i].addr; - end = addr + m68k_memory[i].size; - m68k_setup_node(i); - availmem = PAGE_ALIGN(availmem); - availmem += init_bootmem_node(NODE_DATA(i), - availmem >> PAGE_SHIFT, - addr >> PAGE_SHIFT, - end >> PAGE_SHIFT); - } + /* Reserve kernel text/data/bss and the memory allocated in head.S */ + memblock_reserve(m68k_memory[0].addr, availmem - m68k_memory[0].addr); /* * Map the physical memory available into the kernel virtual - * address space. First initialize the bootmem allocator with - * the memory we already mapped, so map_node() has something - * to allocate. + * address space. Make sure memblock will not try to allocate + * pages beyond the memory we already mapped in head.S */ - addr = m68k_memory[0].addr; - size = m68k_memory[0].size; - free_bootmem_node(NODE_DATA(0), availmem, - min(m68k_init_mapped_size, size) - (availmem - addr)); - map_node(0); - if (size > m68k_init_mapped_size) - free_bootmem_node(NODE_DATA(0), addr + m68k_init_mapped_size, - size - m68k_init_mapped_size); - - for (i = 1; i < m68k_num_memory; i++) + memblock_set_bottom_up(true); + + for (i = 0; i < m68k_num_memory; i++) { + m68k_setup_node(i); map_node(i); + } flush_tlb_all(); |