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Make nkpt dependent on the size of the initial memory allocation

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MFC after:	1 month
This commit is contained in:
Kip Macy 2008-09-25 07:03:09 +00:00
parent 646787d94f
commit 9d741e6d59
2 changed files with 9 additions and 10 deletions
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1
sys/i386/xen/pmap.c
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@ -437,6 +437,7 @@ pmap_bootstrap(vm_paddr_t firstaddr)
mtx_lock_spin(&allpmaps_lock);
LIST_INSERT_HEAD(&allpmaps, kernel_pmap, pm_list);
mtx_unlock_spin(&allpmaps_lock);
if (nkpt == 0)
nkpt = NKPT;
/*

16
sys/i386/xen/xen_machdep.c
View File

@ -557,8 +557,7 @@ xen_create_contiguous_region(vm_page_t pages, int npages)
.extent_order = 0,
.domid = DOMID_SELF
};
set_xen_guest_handle(reservation.extent_start, &mfn);
reservation.extent_start = &mfn;
balloon_lock(flags);
@ -634,7 +633,7 @@ xen_destroy_contiguous_region(void *addr, int npages)
.extent_order = 0,
.domid = DOMID_SELF
};
set_xen_guest_handle(reservation.extent_start, &mfn);
reservation.extent_start = &mfn;
pfn0 = vtophys(addr) >> PAGE_SHIFT;
#if 0
@ -805,7 +804,7 @@ shift_phys_machine(unsigned long *phys_machine, int nr_pages)
extern unsigned long physfree;
int pdir, curoffset;
extern int nkpt;
void
initvalues(start_info_t *startinfo)
@ -828,15 +827,14 @@ initvalues(start_info_t *startinfo)
unsigned long i;
int ncpus;
nkpt = min(max((startinfo->nr_pages >> NPGPTD_SHIFT), nkpt),
NPGPTD*NPDEPG - KPTDI);
#ifdef SMP
ncpus = MAXCPU;
#else
ncpus = 1;
#endif
#if 0
HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_writable_pagetables);
#endif
HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments);
#ifdef notyet
/*
@ -961,8 +959,8 @@ initvalues(start_info_t *startinfo)
xen_load_cr3(VTOP(IdlePDPTnew));
xen_pgdpt_pin(xpmap_ptom(VTOP(IdlePDPTnew)));
/* allocate remainder of NKPT pages */
for (offset = (KERNBASE >> PDRSHIFT), i = l1_pages - 1; i < NKPT;
/* allocate remainder of nkpt pages */
for (offset = (KERNBASE >> PDRSHIFT), i = l1_pages - 1; i < nkpt;
i++, cur_space += PAGE_SIZE) {
pdir = (offset + i) / NPDEPG;
curoffset = ((offset + i) % NPDEPG);