[Xen-changelog] [xen stable-4.10] Revert "x86/boot: Map more than the first 16MB"

[patchbot@xxxxxxx]

commit 6d9b6bf418e6871c575b3d14b637a013663d3085
Author:     Wei Liu <wei.liu2@xxxxxxxxxx>
AuthorDate: Wed Jan 17 19:47:05 2018 +0000
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Mon Mar 5 15:57:03 2018 +0000

    Revert "x86/boot: Map more than the first 16MB"
    
    This reverts commit 7d6f958d9d18c54017f5ef6e299a08037f035747.
    
    Now we have PVH info relocation support, this change is no longer
    needed.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    (cherry picked from commit 1c8627d2a102274f8afeb9dc548100a60077fc8d)
---
 xen/arch/x86/boot/x86_64.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/boot/x86_64.S b/xen/arch/x86/boot/x86_64.S
index 42636cf334..cf47e019f5 100644
--- a/xen/arch/x86/boot/x86_64.S
+++ b/xen/arch/x86/boot/x86_64.S
@@ -114,10 +114,11 @@ GLOBAL(__page_tables_start)
 GLOBAL(l2_identmap)
         .quad sym_offs(l1_identmap) + __PAGE_HYPERVISOR
         idx = 1
-        .rept 4 * L2_PAGETABLE_ENTRIES - 1
+        .rept 7
         .quad (idx << L2_PAGETABLE_SHIFT) | PAGE_HYPERVISOR | _PAGE_PSE
         idx = idx + 1
         .endr
+        .fill 4 * L2_PAGETABLE_ENTRIES - 8, 8, 0
         .size l2_identmap, . - l2_identmap
 
 /*
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.10

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