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42 lines
1.6 KiB
42 lines
1.6 KiB
From c275a57f5ec3056f732843b11659d892235faff7 Mon Sep 17 00:00:00 2001
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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Date: Wed, 6 Nov 2013 15:37:40 -0500
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Subject: [PATCH] xen/balloon: Set balloon's initial state to number of
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existing RAM pages
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Organization: Invisible Things Lab
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Cc: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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Currently balloon's initial value is set to max_pfn which includes
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non-RAM ranges such as MMIO hole. As result, initial memory target
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(specified by guest's configuration file) will appear smaller than
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what balloon driver perceives to be the current number of available
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pages. Thus it will balloon down "extra" pages, decreasing amount of
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available memory for no good reason.
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Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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---
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drivers/xen/balloon.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
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index b232908..1b62304 100644
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--- a/drivers/xen/balloon.c
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+++ b/drivers/xen/balloon.c
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@@ -641,7 +641,7 @@ static int __init balloon_init(void)
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balloon_stats.current_pages = xen_pv_domain()
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? min(xen_start_info->nr_pages - xen_released_pages, max_pfn)
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- : max_pfn;
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+ : get_num_physpages();
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balloon_stats.target_pages = balloon_stats.current_pages;
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balloon_stats.balloon_low = 0;
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balloon_stats.balloon_high = 0;
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--
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1.8.1.4
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