Remove unneeded vector_page_setprot() for __ARM_ARCH >= 6. A vector

page is always mapped in KVA space and so it's always writeable.

sys/arm/arm/fiq.c

@@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/systm.h>
 
+#include <machine/acle-compat.h>
 #include <machine/armreg.h>
 #include <machine/cpufunc.h>
 #include <machine/fiq.h>
@@ -73,13 +74,13 @@ fiq_installhandler(void *func, size_t size)
 {
 	const uint32_t fiqvector = 7 * sizeof(uint32_t);
 
-#if !defined(__ARM_FIQ_INDIRECT)
+#if __ARM_ARCH < 6 && !defined(__ARM_FIQ_INDIRECT)
 	vector_page_setprot(VM_PROT_READ|VM_PROT_WRITE);
 #endif
 
 	memcpy((void *)(vector_page + fiqvector), func, size);
 
-#if !defined(__ARM_FIQ_INDIRECT)
+#if __ARM_ARCH < 6 && !defined(__ARM_FIQ_INDIRECT)
 	vector_page_setprot(VM_PROT_READ);
 #endif
 	icache_sync((vm_offset_t) fiqvector, size);

sys/arm/arm/pmap-v6.c

@@ -6314,11 +6314,6 @@ pmap_fault(pmap_t pmap, vm_offset_t far, uint32_t fsr, int idx, bool usermode)
 	return (KERN_FAILURE);
 }
 
-/* !!!! REMOVE !!!! */
-void vector_page_setprot(int p)
-{
-}
-
 #if defined(PMAP_DEBUG)
 /*
  *  Reusing of KVA used in pmap_zero_page function !!!

sys/arm/include/pmap-v6.h

@@ -243,11 +243,6 @@ void pmap_preboot_map_attr(vm_paddr_t, vm_offset_t, vm_size_t, vm_prot_t,
  */
 #define	PMAP_DOMAIN_KERNEL	0	/* The kernel uses domain #0 */
 
-/*
- * sys/arm/arm/cpufunc.c
- */
-void vector_page_setprot(int);
-
 #endif	/* _KERNEL */
 // -----------------------------------------------------------------------------