[PATCH v2] pvh: disallow PHYSDEVOP_pirq_eoi_gmfn_v2/v1

[Mukesh Rathor <mukesh.rathor@oracle.com>]

A call to do_physdev_op with PHYSDEVOP_pirq_eoi_gmfn_v2/v1 will corrupt
struct hvm_domain when it writes to domain->arch.pv_domain.pirq_eoi_map.
Disallow that. Currently, such a path exists for linux dom0 pvh.

Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com>
---
 xen/arch/x86/hvm/hvm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 9dd56f7..08ab9cb 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -3427,6 +3427,12 @@ static long hvm_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
     case PHYSDEVOP_irq_status_query:
     case PHYSDEVOP_get_free_pirq:
         return do_physdev_op(cmd, arg);
+
+    /* pvh fixme: coming soon */
+    case PHYSDEVOP_pirq_eoi_gmfn_v1:
+    case PHYSDEVOP_pirq_eoi_gmfn_v2:
+        return -ENOSYS;
+
     }
 }
 
-- 
1.8.3.1