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| author | Ian Campbell <ian.campbell@citrix.com> | 2012-10-03 19:37:09 +0400 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2012-11-29 18:00:19 +0400 |
| commit | f832da068b0aadb15f747f6427b6bf945f525ba4 (patch) | |
| tree | 51e8c8e52d49f0e3754b93d862d161be55ae15df /include/xen | |
| parent | 7892f6928d0cd9ef9200a193183c2033b3143dab (diff) | |
| download | linux-f832da068b0aadb15f747f6427b6bf945f525ba4.tar.xz | |
xen: arm: implement remap interfaces needed for privcmd mappings.
We use XENMEM_add_to_physmap_range which is the preferred interface
for foreign mappings.
Acked-by: Mukesh Rathor <mukesh.rathor@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/interface/memory.h | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h index 90712e2072d5..b40a4315cb8b 100644 --- a/include/xen/interface/memory.h +++ b/include/xen/interface/memory.h @@ -153,6 +153,14 @@ struct xen_machphys_mapping { }; DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mapping_t); +#define XENMAPSPACE_shared_info 0 /* shared info page */ +#define XENMAPSPACE_grant_table 1 /* grant table page */ +#define XENMAPSPACE_gmfn 2 /* GMFN */ +#define XENMAPSPACE_gmfn_range 3 /* GMFN range, XENMEM_add_to_physmap only. */ +#define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom, + * XENMEM_add_to_physmap_range only. + */ + /* * Sets the GPFN at which a particular page appears in the specified guest's * pseudophysical address space. @@ -167,8 +175,6 @@ struct xen_add_to_physmap { uint16_t size; /* Source mapping space. */ -#define XENMAPSPACE_shared_info 0 /* shared info page */ -#define XENMAPSPACE_grant_table 1 /* grant table page */ unsigned int space; /* Index into source mapping space. */ @@ -182,6 +188,24 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap); /*** REMOVED ***/ /*#define XENMEM_translate_gpfn_list 8*/ +#define XENMEM_add_to_physmap_range 23 +struct xen_add_to_physmap_range { + /* Which domain to change the mapping for. */ + domid_t domid; + uint16_t space; /* => enum phys_map_space */ + + /* Number of pages to go through */ + uint16_t size; + domid_t foreign_domid; /* IFF gmfn_foreign */ + + /* Indexes into space being mapped. */ + GUEST_HANDLE(xen_ulong_t) idxs; + + /* GPFN in domid where the source mapping page should appear. */ + GUEST_HANDLE(xen_pfn_t) gpfns; +}; +DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range); + /* * Returns the pseudo-physical memory map as it was when the domain * was started (specified by XENMEM_set_memory_map). @@ -217,4 +241,20 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_memory_map); * during a driver critical region. */ extern spinlock_t xen_reservation_lock; + +/* + * Unmaps the page appearing at a particular GPFN from the specified guest's + * pseudophysical address space. + * arg == addr of xen_remove_from_physmap_t. + */ +#define XENMEM_remove_from_physmap 15 +struct xen_remove_from_physmap { + /* Which domain to change the mapping for. */ + domid_t domid; + + /* GPFN of the current mapping of the page. */ + xen_pfn_t gpfn; +}; +DEFINE_GUEST_HANDLE_STRUCT(xen_remove_from_physmap); + #endif /* __XEN_PUBLIC_MEMORY_H__ */ |