; ** This diff was from earlier tests in the day on 2011-04-28 **:

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index a065fda..d8f206c 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -163,10 +163,12 @@ static void __balloon_append(struct page *page)
 {
        /* Lowmem is re-populated first, so highmem pages go at list tail. */
        if (PageHighMem(page)) {
+               pr_info("(HighMem) &page->lru: 0x%p, ballooned_pages: 0x%p\n", &page->lru, &ballooned_pages);
                list_add_tail(&page->lru, &ballooned_pages);
                balloon_stats.balloon_high++;
                dec_totalhigh_pages();
        } else {
+               pr_info("(LowMem) &page->lru: 0x%p, ballooned_pages: 0x%p\n", &page->lru, &ballooned_pages);
                list_add(&page->lru, &ballooned_pages);
                balloon_stats.balloon_low++;
        }
@@ -488,10 +490,12 @@ static int __init balloon_init(void)
         */
        extra_pfn_end = min(min(max_pfn, e820_end_of_ram_pfn()),
                            (unsigned long)PFN_DOWN(xen_extra_mem_start + xen_extra_mem_size));
+       pr_info("extra_pfn_end: 0x%lx", extra_pfn_end); /* debug */
        for (pfn = PFN_UP(xen_extra_mem_start);
             pfn < extra_pfn_end;
             pfn += balloon_npages) {
                page = pfn_to_page(pfn);
+               pr_info("pfn: 0x%lx, page: 0x%p\n", pfn, page);  /* debug */
                /* totalram_pages doesn't include the boot-time
                   balloon extension, so don't subtract from it. */
                __balloon_append(page);


*********************************
*********************************

; ** I removed the pr_info() lines from within the for() loop after      **
; ** hexediting the "multiply pfn by 0x38" instruction to multiply by 1  **
; ** instead.  I put one outside of the loop, so what ends up being      **
; ** shown by it is still the one that is multiplied by 0x38 while the   **
; ** value of the one actually being operated on is multiplied by 0x1    **

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index a065fda..c02be96 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -488,6 +488,8 @@ static int __init balloon_init(void)
         */
        extra_pfn_end = min(min(max_pfn, e820_end_of_ram_pfn()),
                            (unsigned long)PFN_DOWN(xen_extra_mem_start + xen_extra_mem_size));
+       pfn = PFN_UP(xen_extra_mem_start); /* debug */
+       pr_info("extra_pfn_end: 0x%lx, pfn: %lx, page: %p\n", extra_pfn_end, pfn, pfn_to_page(pfn)); /* debug */
        for (pfn = PFN_UP(xen_extra_mem_start);
             pfn < extra_pfn_end;
             pfn += balloon_npages) {