diff options
| author | Roger Pau Monne <roger.pau@citrix.com> | 2018-08-08 13:46:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-15 09:45:30 +0200 |
| commit | 301ae59106485b18feba6f95ff3866231f5d7109 (patch) | |
| tree | 8d56bfc07dfac761d3ea86976e15b7c48f24b129 /drivers/xen | |
| parent | a333f3f2a25597fecaae27a5b89f58f00a418a61 (diff) | |
xen/balloon: fix balloon initialization for PVH Dom0
[ Upstream commit 3596924a233e45aa918c961a902170fc4916461b ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/xen-balloon.c | 2 |
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; } |