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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-08-22 18:20:16 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-08-23 16:18:20 +0200 |
| commit | 1a1d43318aeb74d679372c0b65029957be274529 (patch) | |
| tree | ab4743e3094ca5239e27448fd11f6dad2bbda6ed /drivers/xen/privcmd.c | |
| parent | xen: Introduce xen_pfn_t for pfn and mfn types (diff) | |
| download | linux-1a1d43318aeb74d679372c0b65029957be274529.tar.xz linux-1a1d43318aeb74d679372c0b65029957be274529.zip | |
xen: allow privcmd for HVM guests
This patch removes the "return -ENOSYS" for auto_translated_physmap
guests from privcmd_mmap, thus it allows ARM guests to issue privcmd
mmap calls. However privcmd mmap calls are still going to fail for HVM
and hybrid guests on x86 because the xen_remap_domain_mfn_range
implementation is currently PV only.
Changes in v2:
- better commit message;
- return -EINVAL from xen_remap_domain_mfn_range if
auto_translated_physmap.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/privcmd.c')
| -rw-r--r-- | drivers/xen/privcmd.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index ccee0f16bcf8..85226cbeca24 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -380,10 +380,6 @@ static struct vm_operations_struct privcmd_vm_ops = { static int privcmd_mmap(struct file *file, struct vm_area_struct *vma) { - /* Unsupported for auto-translate guests. */ - if (xen_feature(XENFEAT_auto_translated_physmap)) - return -ENOSYS; - /* DONTCOPY is essential for Xen because copy_page_range doesn't know * how to recreate these mappings */ vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP; |