[Xen-changelog] [xen stable-4.8] memory: don't suppress P2M update in populate_physmap()

[patchbot@xxxxxxx]

commit 86529087abe239eb4845ee39cff187ea5160ee93
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Jun 23 15:13:21 2017 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Jun 23 15:13:21 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>
    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 8b2c7a9..74182d2 100644
--- a/xen/common/memory.c
+++ b/xen/common/memory.c
@@ -240,8 +240,7 @@ 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-4.8

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