On arm, like sparc64, the end of the kernel map varies from one type of

machine to another.  Therefore, VM_MAX_KERNEL_ADDRESS can't be a constant.
Instead, #define it to be a variable, vm_max_kernel_address, just like we
do on sparc64.

Reviewed by:	kib
Tested by:	ian

4 files changed, 9 insertions, 4 deletions

diff --git a/sys/arm/arm/machdep.c b/sys/arm/arm/machdep.c
index 5c4d92c..28d1902 100644
--- a/sys/arm/arm/machdep.c
+++ b/sys/arm/arm/machdep.c
@@ -1178,7 +1178,6 @@ initarm(struct arm_boot_params *abp)
 	struct pv_addr kernel_l1pt;
 	struct pv_addr dpcpu;
 	vm_offset_t dtbp, freemempos, l2_start, lastaddr;
-	vm_offset_t pmap_bootstrap_lastaddr;
 	uint32_t memsize, l2size;
 	char *env;
 	void *kmdp;
@@ -1288,7 +1287,7 @@ initarm(struct arm_boot_params *abp)
 	availmem_regions_sz = curr;
 
 	/* Platform-specific initialisation */
-	pmap_bootstrap_lastaddr = initarm_lastaddr();
+	vm_max_kernel_address = initarm_lastaddr();
 
 	pcpu0_init();
 
@@ -1477,7 +1476,7 @@ initarm(struct arm_boot_params *abp)
 	arm_intrnames_init();
 	arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
 	arm_dump_avail_init(memsize, sizeof(dump_avail) / sizeof(dump_avail[0]));
-	pmap_bootstrap(freemempos, pmap_bootstrap_lastaddr, &kernel_l1pt);
+	pmap_bootstrap(freemempos, vm_max_kernel_address, &kernel_l1pt);
 	msgbufp = (void *)msgbufpv.pv_va;
 	msgbufinit(msgbufp, msgbufsize);
 	mutex_init();
diff --git a/sys/arm/arm/pmap-v6.c b/sys/arm/arm/pmap-v6.c
index d3e386d..f05f120 100644
--- a/sys/arm/arm/pmap-v6.c
+++ b/sys/arm/arm/pmap-v6.c
@@ -231,6 +231,8 @@ vm_paddr_t kernel_l1pa;
 
 vm_offset_t kernel_vm_end = 0;
 
+vm_offset_t vm_max_kernel_address;
+
 struct pmap kernel_pmap_store;
 
 static pt_entry_t *csrc_pte, *cdst_pte;
diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c
index 7170a98..c9cb42c 100644
--- a/sys/arm/arm/pmap.c
+++ b/sys/arm/arm/pmap.c
@@ -220,6 +220,8 @@ vm_paddr_t kernel_l1pa;
 
 vm_offset_t kernel_vm_end = 0;
 
+vm_offset_t vm_max_kernel_address;
+
 struct pmap kernel_pmap_store;
 
 static pt_entry_t *csrc_pte, *cdst_pte;
diff --git a/sys/arm/include/vmparam.h b/sys/arm/include/vmparam.h
index 267ba6e..50c575b 100644
--- a/sys/arm/include/vmparam.h
+++ b/sys/arm/include/vmparam.h
@@ -133,7 +133,7 @@
 #define VM_MIN_KERNEL_ADDRESS KERNBASE
 #endif
 
-#define VM_MAX_KERNEL_ADDRESS	0xffffffff
+#define	VM_MAX_KERNEL_ADDRESS	(vm_max_kernel_address)
 
 /*
  * Virtual size (bytes) for various kernel submaps.
@@ -166,6 +166,8 @@
 #define UMA_MD_SMALL_ALLOC
 #endif /* ARM_USE_SMALL_ALLOC */
 
+extern vm_offset_t vm_max_kernel_address;
+
 #define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
 
 #endif	/* _MACHINE_VMPARAM_H_ */