Hi Greg,
On Mon, Nov 16, 2015 at 1:18 PM, Greg Ungerer <gerg@xxxxxxxxxxx> wrote:
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -238,11 +238,14 @@ void __init setup_arch(char **cmdline_p)
* Give all the memory to the bootmap allocator, tell it to put
the
* boot mem_map at the start of memory.
*/
+ min_low_pfn = PFN_DOWN(memory_start);
+ max_pfn = max_low_pfn = PFN_DOWN(memory_end);
+
bootmap_size = init_bootmem_node(
NODE_DATA(0),
- memory_start >> PAGE_SHIFT, /* map goes here */
- PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire
*/
- memory_end >> PAGE_SHIFT);
+ min_low_pfn, /* map goes here */
+ PFN_DOWN(PAGE_OFFSET), /* 0 on coldfire */
+ max_pfn);
/*
* Free the usable memory, we have to make sure we do not free
* the bootmem bitmap so we then reserve it after freeing it :-)
Should this be changed to use init_bootmem() as per your changes
in patch 3 ("m68k/mm: sun3 - Add missing initialization of max_pfn and
{min,max}_low_pfn")? For the same reason?
No. PAGE_OFFSET = PAGE_OFFSET_RAW = CONFIG_RAMBASE.
As the comment says, this is zero on coldfire, but not on all m68knommu
platforms.
Upon closer look, this isn't even true on all Coldfire boards:
arch/m68k/configs/m5208evb_defconfig:CONFIG_RAMBASE=0x40000000
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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