Messages in this thread | | | Date | Sat, 1 Aug 2015 01:23:50 +0200 | From | Daniel Kiper <> | Subject | Re: [PATCHv3 10/10] xen/balloon: pre-allocate p2m entries for ballooned pages |
| |
On Thu, Jul 30, 2015 at 06:03:12PM +0100, David Vrabel wrote: > Pages returned by alloc_xenballooned_pages() will be used for grant > mapping which will call set_phys_to_machine() (in PV guests). > > Ballooned pages are set as INVALID_P2M_ENTRY in the p2m and thus may > be using the (shared) missing tables and a subsequent > set_phys_to_machine() will need to allocate new tables. > > Since the grant mapping may be done from a context that cannot sleep, > the p2m entries must already be allocated. > > Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Daniel
PS FYI, next week I am on vacation.
| |