Date: Tue, 30 Sep 2014 17:38:22 +0000 (UTC) From: Roger Pau Monné <royger@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r272320 - head/sys/dev/xen/balloon Message-ID: <201409301738.s8UHcMmB017352@svn.freebsd.org>
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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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