1 files changed, 8 insertions, 8 deletions

diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index fa0c69eb937..f3d808451d2 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1300,7 +1300,7 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
  */
 static void __init register_memory(void)
 {
-        unsigned long gapstart, gapsize;
+        unsigned long gapstart, gapsize, round;
         unsigned long long last;
         int           i;
 
@@ -1345,14 +1345,14 @@ static void __init register_memory(void)
         }
 
         /*
-         * Start allocating dynamic PCI memory a bit into the gap,
-         * aligned up to the nearest megabyte.
-         *
-         * Question: should we try to pad it up a bit (do something
-         * like " + (gapsize >> 3)" in there too?). We now have the
-         * technology.
+         * See how much we want to round up: start off with
+         * rounding to the next 1MB area.
          */
-        pci_mem_start = (gapstart + 0xfffff) & ~0xfffff;
+        round = 0x100000;
+        while ((gapsize >> 4) > round)
+                round += round;
+        /* Fun with two's complement */
+        pci_mem_start = (gapstart + round) & -round;
 
         printk("Allocating PCI resources starting at %08lx (gap: %08lx:%08lx)\n",
                 pci_mem_start, gapstart, gapsize);