Remove phys_first_addr and phys_last_addr global variables

The old assumption that all physical memory is directly mapped in
kernel space is about to go away. Those variables are directly linked
to that assumption.

* i386/i386/model_dep.h (phys_first_addr): Remove extern declaration.
(phys_last_addr): Likewise.
* i386/i386/phys.c (pmap_zero_page): Use VM_PAGE_DIRECTMAP_LIMIT
instead of phys_last_addr.
(pmap_copy_page, copy_to_phys, copy_from_phys): Likewise.
* i386/i386/trap.c (user_trap): Remove check against phys_last_addr.
* i386/i386at/biosmem.c (biosmem_bootstrap_common): Don't set
phys_last_addr.
* i386/i386at/mem.c (memmmap): Use vm_page_lookup_pa to determine if
a physical address references physical memory.
* i386/i386at/model_dep.c (phys_first_addr): Remove variable.
(phys_last_addr): Likewise.
(pmap_free_pages, pmap_valid_page): Remove functions.
* i386/intel/pmap.c: Include i386at/biosmem.h.
(pa_index): Turn into an alias for vm_page_table_index.
(pmap_bootstrap): Replace uses of phys_first_addr and phys_last_addr
as appropriate.
(pmap_virtual_space): Use vm_page_table_size instead of phys_first_addr
and phys_last_addr to obtain the number of physical pages.
(pmap_verify_free): Remove function.
(valid_page): Turn this macro into an inline function and rewrite
using vm_page_lookup_pa.
(pmap_page_table_page_alloc): Build the pmap VM object using
vm_page_table_size to determine its size.
(pmap_remove_range, pmap_page_protect, phys_attribute_clear,
phys_attribute_test): Turn page indexes into unsigned long integers.
(pmap_enter): Likewise. In addition, use either vm_page_lookup_pa or
biosmem_directmap_end to determine if a physical address references
physical memory.
* i386/xen/xen.c (hyp_p2m_init): Use vm_page_table_size instead of
phys_last_addr to obtain the number of physical pages.
* kern/startup.c (phys_first_addr): Remove extern declaration.
(phys_last_addr): Likewise.
* linux/dev/init/main.c (linux_init): Use vm_page_seg_end with the
appropriate segment selector instead of phys_last_addr to determine
where high memory starts.
* vm/pmap.h: Update requirements description.
(pmap_free_pages, pmap_valid_page): Remove declarations.
* vm/vm_page.c (vm_page_seg_end, vm_page_boot_table_size,
vm_page_table_size, vm_page_table_index): New functions.
* vm/vm_page.h (vm_page_seg_end, vm_page_table_size,
vm_page_table_index): New function declarations.
* vm/vm_resident.c (vm_page_bucket_count, vm_page_hash_mask): Define
as unsigned long integers.
(vm_page_bootstrap): Compute VP table size based on the page table
size instead of the value returned by pmap_free_pages.

1 files changed, 1 insertions, 1 deletions

diff --git a/linux/dev/init/main.c b/linux/dev/init/main.c
index d69b3fc7..3740c12c 100644
--- a/linux/dev/init/main.c
+++ b/linux/dev/init/main.c
@@ -104,7 +104,7 @@ linux_init (void)
   /*
    * Initialize memory size.
    */
-  high_memory = phys_last_addr;
+  high_memory = vm_page_seg_end(VM_PAGE_SEL_DIRECTMAP);
   init_IRQ ();
   linux_sched_init ();