On Mon, Nov 16, 2020 at 11:05:54PM +0300, Serge Semin wrote:
> On Mon, Nov 16, 2020 at 06:45:15PM +0100, Thomas Bogendoerfer wrote:
> > The loop over all memblocks works with PFN numbers and not physical
> > addresses, so we need for_each_mem_pfn_range().
>
> Great catch! Don't know how that has been working so far. Anyway
The loop is relevant only for systems with highmem, apparently there are
not many highmem users out there.
> Reviewed-by: Serge Semin <fancer.lancer@xxxxxxxxx>
>
> -Sergey
>
> >
> > Fixes: b10d6bca8720 ("arch, drivers: replace for_each_membock() with for_each_mem_range()")
> > Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> > ---
> > arch/mips/kernel/setup.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
> > index 0d4253208bde..ca579deef939 100644
> > --- a/arch/mips/kernel/setup.c
> > +++ b/arch/mips/kernel/setup.c
> > @@ -262,8 +262,8 @@ static void __init bootmem_init(void)
> > static void __init bootmem_init(void)
> > {
> > phys_addr_t ramstart, ramend;
> > - phys_addr_t start, end;
> > - u64 i;
> > + unsigned long start, end;
> > + int i;
> >
> > ramstart = memblock_start_of_DRAM();
> > ramend = memblock_end_of_DRAM();
> > @@ -300,7 +300,7 @@ static void __init bootmem_init(void)
> >
> > min_low_pfn = ARCH_PFN_OFFSET;
> > max_pfn = PFN_DOWN(ramend);
> > - for_each_mem_range(i, &start, &end) {
> > + for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, NULL) {
> > /*
> > * Skip highmem here so we get an accurate max_low_pfn if low
> > * memory stops short of high memory.
> > --
> > 2.16.4
> >
--
Sincerely yours,
Mike.
