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Subject[PATCH R4 2/7] xen/balloon: HVM mode support
HVM mode support.

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
---
drivers/xen/balloon.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index b4206fd..952cfe2 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -227,7 +227,7 @@ static int increase_reservation(unsigned long nr_pages)
set_phys_to_machine(pfn, frame_list[i]);

/* Link back into the page tables if not highmem. */
- if (pfn < max_low_pfn) {
+ if (xen_pv_domain() && !PageHighMem(page)) {
int ret;
ret = HYPERVISOR_update_va_mapping(
(unsigned long)__va(pfn << PAGE_SHIFT),
@@ -275,7 +275,7 @@ static int decrease_reservation(unsigned long nr_pages)

scrub_page(page);

- if (!PageHighMem(page)) {
+ if (xen_pv_domain() && !PageHighMem(page)) {
ret = HYPERVISOR_update_va_mapping(
(unsigned long)__va(pfn << PAGE_SHIFT),
__pte_ma(0), 0);
@@ -390,12 +390,12 @@ static int __init balloon_init(void)
unsigned long pfn, extra_pfn_end;
struct page *page;

- if (!xen_pv_domain())
+ if (!xen_domain())
return -ENODEV;

pr_info("xen_balloon: Initialising balloon driver.\n");

- balloon_stats.current_pages = min(xen_start_info->nr_pages, max_pfn);
+ balloon_stats.current_pages = xen_pv_domain() ? min(xen_start_info->nr_pages, max_pfn) : max_pfn;
balloon_stats.target_pages = balloon_stats.current_pages;
balloon_stats.balloon_low = 0;
balloon_stats.balloon_high = 0;
--
1.5.6.5

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