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Message-Id: <1383770260-15395-1-git-send-email-boris.ostrovsky@oracle.com> Date: Wed, 6 Nov 2013 15:37:40 -0500 From: Boris Ostrovsky <boris.ostrovsky@...cle.com> To: konrad.wilk@...cle.com, david.vrabel@...rix.com Cc: xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org, boris.ostrovsky@...cle.com 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 <boris.ostrovsky@...cle.com> --- 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 b232908..1b62304 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; -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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