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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-03-06 19:18:39 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-03-06 19:18:39 +0000 |
| commit | e4865c23155b05278f31be537764e760cd2d9b7e (patch) | |
| tree | e020f0021a3939aef936a38ee4322f58df27efbd /xen/include/xen/mm.h | |
| parent | 3c6846fa3462faadbe7b34255cb18009a751cd48 (diff) | |
| download | xen-e4865c23155b05278f31be537764e760cd2d9b7e.tar.gz xen-e4865c23155b05278f31be537764e760cd2d9b7e.tar.bz2 xen-e4865c23155b05278f31be537764e760cd2d9b7e.zip | |
Page offline support in Xen side
This patch add support to offline a page. The basical idea is, when a
page is assigned, it will be marked offline pending and be moved out of
buddy when freed, when a page is free, it will be moved out of buddy directly.
One notice after this change is, now the page->count_info is not
always 0, especially for shadow page, since the PGC_offlining bit may be set.
Signed-off-by: Wang, Shane <shane.wang@intel.com>
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Diffstat (limited to 'xen/include/xen/mm.h')
| -rw-r--r-- | xen/include/xen/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/include/xen/mm.h b/xen/include/xen/mm.h index fa61751785..82340f3ae4 100644 --- a/xen/include/xen/mm.h +++ b/xen/include/xen/mm.h @@ -60,6 +60,9 @@ unsigned long avail_domheap_pages_region( unsigned long avail_domheap_pages(void); #define alloc_domheap_page(d,f) (alloc_domheap_pages(d,0,f)) #define free_domheap_page(p) (free_domheap_pages(p,0)) +unsigned int online_page(unsigned long mfn, uint32_t *status); +int offline_page(unsigned long mfn, int broken, uint32_t *status); +int query_page_offline(unsigned long mfn, uint32_t *status); void scrub_heap_pages(void); |