Messages in this thread | | | Date | Wed, 8 Oct 2008 23:04:33 -0700 | From | "Yinghai Lu" <> | Subject | Re: [patch]x86: arch_add_memory round up address |
| |
On Wed, Oct 8, 2008 at 10:31 PM, Shaohua Li <shaohua.li@intel.com> wrote: > Round up address to a page, otherwise the last page isn't mapped. > > Signed-off-by: Shaohua Li <shaohua.li@intel.com> > --- > arch/x86/mm/init_64.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > Index: linux/arch/x86/mm/init_64.c > =================================================================== > --- linux.orig/arch/x86/mm/init_64.c 2008-10-09 11:42:33.000000000 +0800 > +++ linux/arch/x86/mm/init_64.c 2008-10-09 11:43:22.000000000 +0800 > @@ -721,7 +721,8 @@ int arch_add_memory(int nid, u64 start, > unsigned long nr_pages = size >> PAGE_SHIFT; > int ret; > > - last_mapped_pfn = init_memory_mapping(start, start + size-1); > + last_mapped_pfn = init_memory_mapping(start, > + round_up(start + size-1, PAGE_SIZE)); > if (last_mapped_pfn > max_pfn_mapped) > max_pfn_mapped = last_mapped_pfn;
should use
last_mapped_pfn = init_memory_mapping(start, start + size);
YH
| |