Dave Anderson wrote:
Takao Indoh wrote:
>
> However, page_to_phys returns 0x100000000. I think page_to_phys does not
> support sparsemem system.
>
>
Yeah -- the is_page_ptr() function needs to be enhanced
to support SPARSEMEM kernels...
I made a bunch of updates to the original SPARSEMEM patch
in 4.0-3.3, but missed this one.
Dave
In addition to the previous patch to dump_mem_map_SPARSEMEM(),
this update to is_page_ptr() should do the trick:
is_page_ptr(ulong addr, physaddr_t *phys)
{
int n;
ulong ppstart, ppend;
struct node_table *nt;
ulong pgnum, node_size;
+ ulong nr, sec_addr;
+ ulong nr_mem_sections;
+ ulong coded_mem_map, mem_map, end_mem_map;
+ physaddr_t section_paddr;
+
+ if (IS_SPARSEMEM()) {
+ nr_mem_sections = NR_MEM_SECTIONS();
+ for (nr = 0; nr <= nr_mem_sections ; nr++) {
+ if ((sec_addr = valid_section_nr(nr))) {
+ coded_mem_map = section_mem_map_addr(sec_addr);
+ mem_map = sparse_decode_mem_map(coded_mem_map, nr);
+ end_mem_map = mem_map + (PAGES_PER_SECTION() *
SIZE(page));
+
+ if ((addr >= mem_map) && (addr <
end_mem_map)) {
+ if ((addr - mem_map) % SIZE(page))
+ return FALSE;
+ if (phys) {
+ section_paddr =
PTOB(section_nr_to_pfn(nr));
+ pgnum = (addr - mem_map) / SIZE(page);
+ *phys = section_paddr + (pgnum *
PAGESIZE());
+ }
+ return TRUE;
+ }
+ }
+ }
+ return FALSE;
+ }
for (n = 0; n < vt->numnodes; n++) {
nt = &vt->node_table[n];
Thanks,
Dave