Messages in this thread | | | Date | Mon, 8 Aug 2011 11:34:23 +0200 | From | Tejun Heo <> | Subject | Re: [PATCH] memblock: add memblock_start_of_DRAM() |
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(cc'ing hpa and quoting whole body)
On Sat, Aug 06, 2011 at 08:59:23PM +0200, Sam Ravnborg wrote: > SPARC32 require access to the start address. > Add a new helper memblock_start_of_DRAM() to give > access to the address of the first memblock - which > contains the lowest address. > > The ackward name was chosen to match the already present > memblock_end_of_DRAM(). > > Signed-off-by: Sam Ravnborg <sam@ravnborg.org> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Yinghai Lu <yinghai@kernel.org> > --- > Hi Tejun. > > I have started to replace bootmem with memblock for sparc32. > This is so far the only general functionality missing. > > But conversion is not finished yet - more may come. > > This is on top of the memblock branch of your misc tree
Yes, this looks good to me.
Acked-by: Tejun Heo <tj@kernel.org>
hpa, how do you want to proceed with the patchset?
Thanks.
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h > index 7c59804..a6bb102 100644 > --- a/include/linux/memblock.h > +++ b/include/linux/memblock.h > @@ -157,6 +157,7 @@ phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align, > phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, > phys_addr_t max_addr); > phys_addr_t memblock_phys_mem_size(void); > +phys_addr_t memblock_start_of_DRAM(void); > phys_addr_t memblock_end_of_DRAM(void); > void memblock_enforce_memory_limit(phys_addr_t memory_limit); > int memblock_is_memory(phys_addr_t addr); > diff --git a/mm/memblock.c b/mm/memblock.c > index 07cb3ae..2f55f19 100644 > --- a/mm/memblock.c > +++ b/mm/memblock.c > @@ -782,6 +782,12 @@ phys_addr_t __init memblock_phys_mem_size(void) > return memblock.memory.total_size; > } > > +/* lowest address */ > +phys_addr_t __init_memblock memblock_start_of_DRAM(void) > +{ > + return memblock.memory.regions[0].base; > +} > + > phys_addr_t __init_memblock memblock_end_of_DRAM(void) > { > int idx = memblock.memory.cnt - 1;
-- tejun
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