xen/arm: Drop frametable_virt_end

It has never been used since the introduction and is technically a dead
code violating MISRA C.

Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/arch/arm/include/asm/config.h

@@ -66,10 +66,6 @@
 #define STACK_ORDER 3
 #define STACK_SIZE  (PAGE_SIZE << STACK_ORDER)
 
-#ifndef __ASSEMBLY__
-extern unsigned long frametable_virt_end;
-#endif
-
 #define watchdog_disable() ((void)0)
 #define watchdog_enable()  ((void)0)
 

xen/arch/arm/mmu/mm.c

@@ -8,8 +8,6 @@
 #include <xen/pdx.h>
 #include <xen/string.h>
 
-unsigned long frametable_virt_end __read_mostly;
-
 /* Map a frame table to cover physical addresses ps through pe */
 void __init setup_frametable_mappings(paddr_t ps, paddr_t pe)
 {
@@ -46,9 +44,6 @@ void __init setup_frametable_mappings(paddr_t ps, paddr_t pe)
     memset(&frame_table[0], 0, nr_pdxs * sizeof(struct page_info));
     memset(&frame_table[nr_pdxs], -1,
            frametable_size - (nr_pdxs * sizeof(struct page_info)));
-
-    frametable_virt_end = FRAMETABLE_VIRT_START + (nr_pdxs *
-                                                   sizeof(struct page_info));
 }
 
 /*