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| author | Ian Campbell <ian.campbell@citrix.com> | 2013-02-20 07:00:58 +0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-02-20 07:01:55 +0400 |
| commit | 07d0c943663f82d9682856c0a7db7145a6c911d6 (patch) | |
| tree | 371eaccc190f1b79010b063bd4497c21d0e40571 | |
| parent | dacd45f4e793e46e8299c9a580e400866ffe0770 (diff) | |
| download | linux-07d0c943663f82d9682856c0a7db7145a6c911d6.tar.xz | |
xen: implement updated XENMEM_add_to_physmap_range ABI
Allows for more fine grained error reporting. Only used by PVH and
ARM both of which are marked EXPERIMENTAL precisely because the ABI
is not yet stable
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
[v1: Rebased without PVH patches]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | arch/arm/xen/enlighten.c | 8 | ||||
| -rw-r--r-- | include/xen/interface/memory.h | 6 |
2 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 7a32976fa2a3..8dc0605a9ce9 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -59,14 +59,16 @@ static int map_foreign_page(unsigned long lpfn, unsigned long fgmfn, }; xen_ulong_t idx = fgmfn; xen_pfn_t gpfn = lpfn; + int err = 0; set_xen_guest_handle(xatp.idxs, &idx); set_xen_guest_handle(xatp.gpfns, &gpfn); + set_xen_guest_handle(xatp.errs, &err); rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap_range, &xatp); - if (rc) { - pr_warn("Failed to map pfn to mfn rc:%d pfn:%lx mfn:%lx\n", - rc, lpfn, fgmfn); + if (rc || err) { + pr_warn("Failed to map pfn to mfn rc:%d:%d pfn:%lx mfn:%lx\n", + rc, err, lpfn, fgmfn); return 1; } return 0; diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h index b40a4315cb8b..2ecfe4f700d9 100644 --- a/include/xen/interface/memory.h +++ b/include/xen/interface/memory.h @@ -190,6 +190,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap); #define XENMEM_add_to_physmap_range 23 struct xen_add_to_physmap_range { + /* IN */ /* Which domain to change the mapping for. */ domid_t domid; uint16_t space; /* => enum phys_map_space */ @@ -203,6 +204,11 @@ struct xen_add_to_physmap_range { /* GPFN in domid where the source mapping page should appear. */ GUEST_HANDLE(xen_pfn_t) gpfns; + + /* OUT */ + + /* Per index error code. */ + GUEST_HANDLE(int) errs; }; DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range); |