[XEN v1 7/9] xen/arm: Restrict zeroeth_table_offset for ARM_64

[Ayan Kumar Halder <ayan.kumar.halder@amd.com>]

zeroeth_table_offset is not accessed for ARM_32.
This is a left over of the following commit

"
commit 5fa6e9abfb11
Author: Ian Campbell <ian.campbell@citrix.com>
Date:   Thu Sep 18 01:09:48 2014 +0100

    xen: arm: Implement variable levels in dump_pt_walk
"

Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
---
 xen/arch/arm/include/asm/lpae.h | 10 ++++++++++
 xen/arch/arm/mm.c               |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/xen/arch/arm/include/asm/lpae.h b/xen/arch/arm/include/asm/lpae.h
index 3fdd5d0de2..35769debf9 100644
--- a/xen/arch/arm/include/asm/lpae.h
+++ b/xen/arch/arm/include/asm/lpae.h
@@ -161,6 +161,7 @@ static inline bool lpae_is_superpage(lpae_t pte, unsigned int level)
 #define lpae_set_mfn(pte, mfn)  ((pte).walk.base = mfn_x(mfn))
 
 /* Generate an array @var containing the offset for each level from @addr */
+#ifdef CONFIG_ARM_64
 #define DECLARE_OFFSETS(var, addr)          \
     const unsigned int var[4] = {           \
         zeroeth_table_offset(addr),         \
@@ -168,6 +169,15 @@ static inline bool lpae_is_superpage(lpae_t pte, unsigned int level)
         second_table_offset(addr),          \
         third_table_offset(addr)            \
     }
+#else
+#define DECLARE_OFFSETS(var, addr)          \
+    const unsigned int var[4] = {           \
+        0,                                  \
+        first_table_offset(addr),           \
+        second_table_offset(addr),          \
+        third_table_offset(addr)            \
+    }
+#endif
 
 /*
  * Standard entry type that we'll use to build Xen's own pagetables.
diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 630175276f..be939fb106 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -184,7 +184,11 @@ void dump_pt_walk(paddr_t ttbr, paddr_t addr,
     static const char *level_strs[4] = { "0TH", "1ST", "2ND", "3RD" };
     const mfn_t root_mfn = maddr_to_mfn(ttbr);
     const unsigned int offsets[4] = {
+#ifdef CONFIG_ARM_64
         zeroeth_table_offset(addr),
+#else
+        0,
+#endif
         first_table_offset(addr),
         second_table_offset(addr),
         third_table_offset(addr)
-- 
2.17.1