xen: allow privcmd for HVM guests

In order for privcmd mmap to work correctly, xen_remap_domain_mfn_range
needs to be implemented for HVM guests.
If it is not, mmap is going to fail later on.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index ccee0f16bcf8c10e994855a6efadff99b5b6bda1..85226cbeca245caf6c71943e58226456b254727f 100644 (file)
--- 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;