[Xen-devel] [PATCH 25/38] arm: remove old identity map of boot paddr when we are done with it.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/arch/arm/mm.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 160a4e9..ab52171 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -214,6 +214,14 @@ void __init setup_pagetables(unsigned long 
boot_phys_offset)
     lpae_t pte, *p;
     int i;
 
+    if ( boot_phys_offset != 0 )
+    {
+        /* Remove the old identity mapping of the boot paddr */
+        pte.bits = 0;
+        dest_va = (unsigned long)_start + boot_phys_offset;
+        write_pte(xen_second + second_linear_offset(dest_va), pte);
+    }
+
     xen_paddr = device_tree_get_xen_paddr();
 
     /* Map the destination in the boot misc area. */
-- 
1.7.9.1


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