[Xen-changelog] [xen stable-4.3] x86: PHYSDEVOP_{prepare, release}_msix are privileged

[patchbot@xxxxxxx]

commit 9612d2948e1637c303e6be68df2168775ac5e97e
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Jan 24 13:45:03 2014 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Jan 24 13:45:03 2014 +0100

    x86: PHYSDEVOP_{prepare,release}_msix are privileged
    
    Yet this wasn't being enforced.
    
    This is XSA-87.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 9c7e789a1b60b6114e0b1ef16dff95f03f532fb5
    master date: 2014-01-24 13:41:36 +0100
---
 xen/arch/x86/physdev.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/xen/arch/x86/physdev.c b/xen/arch/x86/physdev.c
index 3733c7a..945deee 100644
--- a/xen/arch/x86/physdev.c
+++ b/xen/arch/x86/physdev.c
@@ -586,7 +586,10 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) 
arg)
         if ( copy_from_guest(&dev, arg, 1) )
             ret = -EFAULT;
         else
-            ret = pci_prepare_msix(dev.seg, dev.bus, dev.devfn,
+            ret = xsm_resource_setup_pci(XSM_PRIV,
+                                         (dev.seg << 16) | (dev.bus << 8) |
+                                         dev.devfn) ?:
+                  pci_prepare_msix(dev.seg, dev.bus, dev.devfn,
                                    cmd != PHYSDEVOP_prepare_msix);
         break;
     }
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.3

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