svn commit: r272320 - head/sys/dev/xen/balloon
Roger Pau Monné
royger at FreeBSD.org
Tue Sep 30 17:38:22 UTC 2014
Author: royger
Date: Tue Sep 30 17:38:21 2014
New Revision: 272320
URL: http://svnweb.freebsd.org/changeset/base/272320
Log:
xen/balloon: fix accounting of current memory pages on PVH
Using realmem on PVH is not realiable, since in this case the realmem value
is computed from Maxmem, which contains the higher memory address found. Use
HYPERVISOR_start_info->nr_pages instead, which is set by the hypervisor and
contains the exact number of memory pages assigned to the domain.
Sponsored by: Citrix Systems R&D
Modified:
head/sys/dev/xen/balloon/balloon.c
Modified: head/sys/dev/xen/balloon/balloon.c
==============================================================================
--- head/sys/dev/xen/balloon/balloon.c Tue Sep 30 17:37:26 2014 (r272319)
+++ head/sys/dev/xen/balloon/balloon.c Tue Sep 30 17:38:21 2014 (r272320)
@@ -405,7 +405,8 @@ xenballoon_attach(device_t dev)
#ifndef XENHVM
bs.current_pages = min(xen_start_info->nr_pages, max_pfn);
#else
- bs.current_pages = realmem;
+ bs.current_pages = xen_pv_domain() ?
+ HYPERVISOR_start_info->nr_pages : realmem;
#endif
bs.target_pages = bs.current_pages;
bs.balloon_low = 0;
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