[PATCH 3/3] libxc: Add support for the altp2m suppress #VE hvmop

[Adrian Pop <apop@bitdefender.com>]

This adds a wrapper for issuing HVMOP_altp2m_set_suppress_ve from a
domain.

Signed-off-by: Adrian Pop <apop@bitdefender.com>
---
 tools/libxc/include/xenctrl.h |  2 ++
 tools/libxc/xc_altp2m.c       | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 2d97d36c38..5e1e4cfa81 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -1923,6 +1923,8 @@ int xc_altp2m_destroy_view(xc_interface *handle, domid_t domid,
 /* Switch all vCPUs of the domain to the specified altp2m view */
 int xc_altp2m_switch_to_view(xc_interface *handle, domid_t domid,
                              uint16_t view_id);
+int xc_altp2m_set_suppress_ve(xc_interface *handle, domid_t domid,
+                              uint16_t view_id, xen_pfn_t gfn, uint8_t sve);
 int xc_altp2m_set_mem_access(xc_interface *handle, domid_t domid,
                              uint16_t view_id, xen_pfn_t gfn,
                              xenmem_access_t access);
diff --git a/tools/libxc/xc_altp2m.c b/tools/libxc/xc_altp2m.c
index 0639632477..b0f3e344af 100644
--- a/tools/libxc/xc_altp2m.c
+++ b/tools/libxc/xc_altp2m.c
@@ -163,6 +163,30 @@ int xc_altp2m_switch_to_view(xc_interface *handle, domid_t domid,
     return rc;
 }
 
+int xc_altp2m_set_suppress_ve(xc_interface *handle, domid_t domid,
+                              uint16_t view_id, xen_pfn_t gfn, uint8_t sve)
+{
+    int rc;
+    DECLARE_HYPERCALL_BUFFER(xen_hvm_altp2m_op_t, arg);
+
+    arg = xc_hypercall_buffer_alloc(handle, arg, sizeof(*arg));
+    if ( arg == NULL )
+        return -1;
+
+    arg->version = HVMOP_ALTP2M_INTERFACE_VERSION;
+    arg->cmd = HVMOP_altp2m_set_suppress_ve;
+    arg->domain = domid;
+    arg->u.set_suppress_ve.view = view_id;
+    arg->u.set_suppress_ve.gfn = gfn;
+    arg->u.set_suppress_ve.suppress_ve = sve;
+
+    rc = xencall2(handle->xcall, __HYPERVISOR_hvm_op, HVMOP_altp2m,
+		  HYPERCALL_BUFFER_AS_ARG(arg));
+
+    xc_hypercall_buffer_free(handle, arg);
+    return rc;
+}
+
 int xc_altp2m_set_mem_access(xc_interface *handle, domid_t domid,
                              uint16_t view_id, xen_pfn_t gfn,
                              xenmem_access_t access)
-- 
2.12.1


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