diff options
| author | Keir Fraser <keir@xen.org> | 2010-11-26 14:17:56 +0000 |
|---|---|---|
| committer | Keir Fraser <keir@xen.org> | 2010-11-26 14:17:56 +0000 |
| commit | ff80d6a6f9bbd772291ff12e65d42ba7008250bc (patch) | |
| tree | 93a1ef6b2238acd1628d27fec004db391dc2b3a1 /xen/common/grant_table.c | |
| parent | 44e41ca0bcd96588252be3143964df602cc3e5d0 (diff) | |
| download | xen-ff80d6a6f9bbd772291ff12e65d42ba7008250bc.tar.gz xen-ff80d6a6f9bbd772291ff12e65d42ba7008250bc.tar.bz2 xen-ff80d6a6f9bbd772291ff12e65d42ba7008250bc.zip | |
xenpaging: populate paged-out pages unconditionally in grant code
Populate a page unconditionally to avoid missing a page-in request.
If the page is already in the process of being paged-in, the this vcpu
will be stopped and later resumed once the page content is usable
again.
This matches other p2m_mem_paging_populate usage in the source tree.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Diffstat (limited to 'xen/common/grant_table.c')
| -rw-r--r-- | xen/common/grant_table.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/xen/common/grant_table.c b/xen/common/grant_table.c index 721f2a5ecd..092e6c3bfd 100644 --- a/xen/common/grant_table.c +++ b/xen/common/grant_table.c @@ -156,10 +156,11 @@ static int __get_paged_frame(unsigned long gfn, unsigned long *frame, int readon if ( p2m_is_valid(p2mt) ) { *frame = mfn_x(mfn); - if ( p2m_is_paged(p2mt) ) - p2m_mem_paging_populate(p2m, gfn); if ( p2m_is_paging(p2mt) ) + { + p2m_mem_paging_populate(p2m, gfn); rc = GNTST_eagain; + } } else { *frame = INVALID_MFN; rc = GNTST_bad_page; |