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authorRoger Pau Monne <roger.pau@citrix.com>2018-08-08 13:46:41 +0200
committerBoris Ostrovsky <boris.ostrovsky@oracle.com>2018-08-08 11:03:20 -0400
commit3596924a233e45aa918c961a902170fc4916461b (patch)
tree8f59d036678757a8c9f6304c9cdf2bca51abcb30 /drivers/xen/xen-balloon.c
parentcd9139220b87f40ea83858de1d6436c639376ce7 (diff)
xen/balloon: fix balloon initialization for PVH Dom0
The current balloon code tries to calculate a delta factor for the balloon target when running in HVM mode in order to account for memory used by the firmware. This workaround for memory accounting doesn't work properly on a PVH Dom0, that has a static-max value different from the target value even at startup. Note that this is not a problem for DomUs because guests are started with a static-max value that matches the amount of RAM in the memory map. Fix this by forcefully setting target_diff for Dom0, regardless of it's mode. Reported-by: Gabriel Bercarug <bercarug@amazon.com> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen/xen-balloon.c')
-rw-r--r--drivers/xen/xen-balloon.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
index b437fccd4e62..294f35ce9e46 100644
--- a/drivers/xen/xen-balloon.c
+++ b/drivers/xen/xen-balloon.c
@@ -81,7 +81,7 @@ static void watch_target(struct xenbus_watch *watch,
static_max = new_target;
else
static_max >>= PAGE_SHIFT - 10;
- target_diff = xen_pv_domain() ? 0
+ target_diff = (xen_pv_domain() || xen_initial_domain()) ? 0
: static_max - balloon_stats.target_pages;
}