From: Boris Ostrovsky Date: Wed, 6 Nov 2013 20:37:40 +0000 (-0500) Subject: xen/balloon: Set balloon's initial state to number of existing RAM pages X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c275a57f5ec3056f732843b11659d892235faff7;p=linux-beck.git 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 --- diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index b232908a6192..1b6230419704 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;