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Long ago, in r120654, the rounding of KERNend and physfree in locore

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was changed from a small page boundary to a large page boundary.  As
a consequence pmap_kmem_choose() became a pointless waste of address
space.  Eliminate it.
This commit is contained in:
Alan Cox 2010-01-09 22:09:10 +00:00
parent ccb1921ee0
commit 0f59b74f76
1 changed files with 0 additions and 20 deletions
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20
sys/i386/i386/pmap.c
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@ -317,7 +317,6 @@ static int _pmap_unwire_pte_hold(pmap_t pmap, vm_page_t m, vm_page_t *free);
static pt_entry_t *pmap_pte_quick(pmap_t pmap, vm_offset_t va);
static void pmap_pte_release(pt_entry_t *pte);
static int pmap_unuse_pt(pmap_t, vm_offset_t, vm_page_t *);
static vm_offset_t pmap_kmem_choose(vm_offset_t addr);
#ifdef PAE
static void *pmap_pdpt_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait);
#endif
@ -333,24 +332,6 @@ CTASSERT(1 << PTESHIFT == sizeof(pt_entry_t));
*/
CTASSERT(KERNBASE % (1 << 24) == 0);
/*
* Move the kernel virtual free pointer to the next
* 4MB. This is used to help improve performance
* by using a large (4MB) page for much of the kernel
* (.text, .data, .bss)
*/
static vm_offset_t
pmap_kmem_choose(vm_offset_t addr)
{
vm_offset_t newaddr = addr;
#ifndef DISABLE_PSE
if (cpu_feature & CPUID_PSE)
newaddr = (addr + PDRMASK) & ~PDRMASK;
#endif
return newaddr;
}
/*
* Bootstrap the system enough to run with virtual memory.
*
@ -378,7 +359,6 @@ pmap_bootstrap(vm_paddr_t firstaddr)
* in this calculation.
*/
virtual_avail = (vm_offset_t) KERNBASE + firstaddr;
virtual_avail = pmap_kmem_choose(virtual_avail);
virtual_end = VM_MAX_KERNEL_ADDRESS;