[Xen-changelog] [xen stable-4.4] x86/pvh: disallow PHYSDEVOP_pirq_eoi_gmfn_v2/v1

[patchbot@xxxxxxx]

commit 1e83fa5ee8064cc81e25f2a04cd47aeb5104413c
Author:     Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
AuthorDate: Fri Apr 4 10:38:52 2014 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Apr 4 10:38:52 2014 +0200

    x86/pvh: disallow PHYSDEVOP_pirq_eoi_gmfn_v2/v1
    
    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@xxxxxxxxxx>
    master commit: a7ca5c402e8cf61c5e8dd6e6797a627863f5a243
    master date: 2014-03-24 09:47:59 +0100
---
 xen/arch/x86/hvm/hvm.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index a666471..4228cf4 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -3292,6 +3292,12 @@ 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;
+
     }
 }
 
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.4

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