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Date:      Mon, 18 Feb 2013 01:02:49 +0000 (UTC)
From:      Alan Cox <alc@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r246926 - in head/sys: arm/arm arm/include vm
Message-ID:  <201302180102.r1I12nMX049209@svn.freebsd.org>
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Author: alc
Date: Mon Feb 18 01:02:48 2013
New Revision: 246926
URL: http://svnweb.freebsd.org/changeset/base/246926

Log:
  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

Modified:
  head/sys/arm/arm/machdep.c
  head/sys/arm/arm/pmap-v6.c
  head/sys/arm/arm/pmap.c
  head/sys/arm/include/vmparam.h
  head/sys/vm/vm_kern.c

Modified: head/sys/arm/arm/machdep.c
==============================================================================
--- head/sys/arm/arm/machdep.c	Mon Feb 18 00:38:40 2013	(r246925)
+++ head/sys/arm/arm/machdep.c	Mon Feb 18 01:02:48 2013	(r246926)
@@ -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();

Modified: head/sys/arm/arm/pmap-v6.c
==============================================================================
--- head/sys/arm/arm/pmap-v6.c	Mon Feb 18 00:38:40 2013	(r246925)
+++ head/sys/arm/arm/pmap-v6.c	Mon Feb 18 01:02:48 2013	(r246926)
@@ -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;

Modified: head/sys/arm/arm/pmap.c
==============================================================================
--- head/sys/arm/arm/pmap.c	Mon Feb 18 00:38:40 2013	(r246925)
+++ head/sys/arm/arm/pmap.c	Mon Feb 18 01:02:48 2013	(r246926)
@@ -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;

Modified: head/sys/arm/include/vmparam.h
==============================================================================
--- head/sys/arm/include/vmparam.h	Mon Feb 18 00:38:40 2013	(r246925)
+++ head/sys/arm/include/vmparam.h	Mon Feb 18 01:02:48 2013	(r246926)
@@ -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_ */

Modified: head/sys/vm/vm_kern.c
==============================================================================
--- head/sys/vm/vm_kern.c	Mon Feb 18 00:38:40 2013	(r246925)
+++ head/sys/vm/vm_kern.c	Mon Feb 18 01:02:48 2013	(r246926)
@@ -98,7 +98,7 @@ SYSCTL_ULONG(_vm, OID_AUTO, min_kernel_a
     NULL, VM_MIN_KERNEL_ADDRESS, "Min kernel address");
 
 SYSCTL_ULONG(_vm, OID_AUTO, max_kernel_address, CTLFLAG_RD,
-#ifdef __sparc64__
+#if defined(__arm__) || defined(__sparc64__)
     &vm_max_kernel_address, 0,
 #else
     NULL, VM_MAX_KERNEL_ADDRESS,

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