[LINUX] Use pfn_to_page instead of relying in memory assumptions

This makes usage agnostic wrt the memory model being used.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>

diff --git a/linux-2.6-xen-sparse/arch/i386/mm/init-xen.c b/linux-2.6-xen-sparse/arch/i386/mm/init-xen.c
index c0c0bb2fa8447a1ecc824d271c86681e53e911e9..4f0175462a16ad806ee8b82ebb5595b93ff7d4ce 100644 (file)
--- a/linux-2.6-xen-sparse/arch/i386/mm/init-xen.c
+++ b/linux-2.6-xen-sparse/arch/i386/mm/init-xen.c
@@ -663,8 +663,8 @@ void __init mem_init(void)
        totalram_pages += free_all_bootmem();
        /* XEN: init and count low-mem pages outside initial allocation. */
        for (pfn = xen_start_info->nr_pages; pfn < max_low_pfn; pfn++) {
-               ClearPageReserved(&mem_map[pfn]);
-               set_page_count(&mem_map[pfn], 1);
+               ClearPageReserved(pfn_to_page(pfn));
+               set_page_count(pfn_to_page(pfn), 1);
                totalram_pages++;
        }
 

diff --git a/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c b/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
index d3ce58355f0d7d3430627050a280f1ce2dd8ebe5..61c75c08a6285cea852f38e249db6741f3f4d2f4 100644 (file)
--- a/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
+++ b/linux-2.6-xen-sparse/arch/x86_64/mm/init-xen.c
@@ -913,8 +913,8 @@ void __init mem_init(void)
 #endif
        /* XEN: init and count pages outside initial allocation. */
        for (pfn = xen_start_info->nr_pages; pfn < max_pfn; pfn++) {
-               ClearPageReserved(&mem_map[pfn]);
-               set_page_count(&mem_map[pfn], 1);
+               ClearPageReserved(pfn_to_page(pfn));
+               set_page_count(pfn_to_page(pfn), 1);
                totalram_pages++;
        }
        reservedpages = end_pfn - totalram_pages - e820_hole_size(0, end_pfn);