Messages in this thread Patch in this message | | | Subject | Re: [PATCH 4/4] m68knommu: Add missing initialization of max_pfn and {min,max}_low_pfn | From | Greg Ungerer <> | Date | Tue, 17 Nov 2015 09:54:12 +1000 |
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Hi Geert,
On 15/11/15 21:04, Geert Uytterhoeven wrote: > If max_pfn is not initialized, the block layer may use wrong DMA masks. > > Replace open-coded shifts by PFN_DOWN() while we're at it. > > Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested and working fine on m68knommu. So:
Tested-By: Greg Ungerer <gerg@uclinux.org>
If you respin this patch for any reason I wouldn't object to removing the "/* 0 on coldfire */" comment...
Regards Greg
> --- > Compile-tested only. > --- > arch/m68k/kernel/setup_no.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c > index 88c27d94a7214c95..29b44e69f0f47375 100644 > --- 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 :-) >
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