From 68e11a44a85f1c1d62c92ceed22500f165aa722c Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Wed, 6 Nov 2013 15:37:40 -0500 Subject: [PATCH] xen/balloon: Set balloon's initial state to number of existing RAM pages Currently balloon's initial value is set to max_pfn which includes non-RAM ranges such as MMIO hole. As result, initial memory target (specified by guest's configuration file) will appear smaller than what balloon driver perceives to be the current number of available pages. Thus it will balloon down "extra" pages, decreasing amount of available memory for no good reason. Signed-off-by: Boris Ostrovsky Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index b232908a61925..1b62304197044 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -641,7 +641,7 @@ static int __init balloon_init(void) balloon_stats.current_pages = xen_pv_domain() ? min(xen_start_info->nr_pages - xen_released_pages, max_pfn) - : max_pfn; + : get_num_physpages(); balloon_stats.target_pages = balloon_stats.current_pages; balloon_stats.balloon_low = 0; balloon_stats.balloon_high = 0; -- 2.39.5