[Xen-changelog] [xen stable-4.9] memory: don't suppress P2M update in populate_physmap()

[patchbot@xxxxxxx]

commit a6d336614e90ab7d096c9229e65491e5275f0f0b
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Jun 20 17:07:12 2017 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jun 20 17:07:12 2017 +0200

    memory: don't suppress P2M update in populate_physmap()
    
    Commit d18627583d ("memory: don't hand MFN info to translated guests")
    wrongly added a null-handle check there - just like stated in its
    description for memory_exchange(), the array is also an input for
    populate_physmap() (and hence can't reasonably be null). I have no idea
    how I've managed to overlook this.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Release-acked-by: Julien Grall <julien.grall@xxxxxxx>
    master commit: b964e3106d2cdaa11cc4524181ff14607d110ae4
    master date: 2017-06-20 14:51:53 +0200
---
 xen/common/memory.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/common/memory.c b/xen/common/memory.c
index 1105f3e..5e491bf 100644
--- a/xen/common/memory.c
+++ b/xen/common/memory.c
@@ -239,8 +239,7 @@ static void populate_physmap(struct memop_args *a)
 
             guest_physmap_add_page(d, _gfn(gpfn), _mfn(mfn), a->extent_order);
 
-            if ( !paging_mode_translate(d) &&
-                 !guest_handle_is_null(a->extent_list) )
+            if ( !paging_mode_translate(d) )
             {
                 for ( j = 0; j < (1U << a->extent_order); j++ )
                     set_gpfn_from_mfn(mfn + j, gpfn + j);
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.9

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxx
https://lists.xenproject.org/xen-changelog