Author: marcel
Date: Mon Feb 25 02:41:38 2013
New Revision: 247251
URL: http://svnweb.freebsd.org/changeset/base/247251
Log:
kernacc() expects all KVAs to be covered in the kernel map. With the
introduction of the PBVM, this stopped being the case. Redefine the
VM parameters so that the PBVM is included in the kernel map. In
particular this introduces VM_INIT_KERNEL_ADDRESS to point to the base
of region 5 now that VM_MIN_KERNEL_ADDRESS points to the base of
region 4 to include the PBVM.
While here define KERNBASE to the actual link address of the kernel as
is intended.
PR: 169926
Modified:
head/sys/ia64/ia64/pmap.c
head/sys/ia64/include/vmparam.h
Modified: head/sys/ia64/ia64/pmap.c
==============================================================================
--- head/sys/ia64/ia64/pmap.c Mon Feb 25 01:50:04 2013 (r247250)
+++ head/sys/ia64/ia64/pmap.c Mon Feb 25 02:41:38 2013 (r247251)
@@ -387,7 +387,7 @@ pmap_bootstrap()
*/
ia64_kptdir = ia64_physmem_alloc(PAGE_SIZE, PAGE_SIZE);
nkpt = 0;
- kernel_vm_end = VM_MIN_KERNEL_ADDRESS;
+ kernel_vm_end = VM_INIT_KERNEL_ADDRESS;
/*
* Determine a valid (mappable) VHPT size.
@@ -425,7 +425,7 @@ pmap_bootstrap()
ia64_set_pta(base + (1 << 8) + (pmap_vhpt_log2size << 2) + 1);
ia64_srlz_i();
- virtual_avail = VM_MIN_KERNEL_ADDRESS;
+ virtual_avail = VM_INIT_KERNEL_ADDRESS;
virtual_end = VM_MAX_KERNEL_ADDRESS;
/*
@@ -1383,7 +1383,7 @@ pmap_kextract(vm_offset_t va)
/* Region 5 is our KVA. Bail out if the VA is beyond our limits. */
if (va >= kernel_vm_end)
goto err_out;
- if (va >= VM_MIN_KERNEL_ADDRESS) {
+ if (va >= VM_INIT_KERNEL_ADDRESS) {
pte = pmap_find_kpte(va);
pa = pmap_present(pte) ? pmap_ppn(pte) | (va & PAGE_MASK) : 0;
goto out;
@@ -2746,7 +2746,7 @@ DB_COMMAND(kpte, db_kpte)
db_printf("usage: kpte <kva>\n");
return;
}
- if (addr < VM_MIN_KERNEL_ADDRESS) {
+ if (addr < VM_INIT_KERNEL_ADDRESS) {
db_printf("kpte: error: invalid <kva>\n");
return;
}
Modified: head/sys/ia64/include/vmparam.h
==============================================================================
--- head/sys/ia64/include/vmparam.h Mon Feb 25 01:50:04 2013
(r247250)
+++ head/sys/ia64/include/vmparam.h Mon Feb 25 02:41:38 2013
(r247251)
@@ -181,12 +181,13 @@
/* user/kernel map constants */
#define VM_MIN_ADDRESS 0
#define VM_MAXUSER_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION)
-#define VM_MIN_KERNEL_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION + 1)
-#define VM_MAX_KERNEL_ADDRESS \
- (VM_MIN_KERNEL_ADDRESS + IA64_REGION_GAP_START - 1)
+#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS
+#define VM_INIT_KERNEL_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION + 1)
+#define VM_MAX_KERNEL_ADDRESS (IA64_RR_BASE(IA64_VM_MINKERN_REGION +
2) - 1)
#define VM_MAX_ADDRESS ~0UL
-#define KERNBASE VM_MAXUSER_ADDRESS
+/* We link the kernel at IA64_PBVM_BASE. */
+#define KERNBASE IA64_PBVM_BASE
/*
* USRSTACK is the top (end) of the user stack. Immediately above the user
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