From 4d4f0cc25606e02f016b00565a10be0dab33319f Mon Sep 17 00:00:00 2001
From: Niklas Hallqvist <niklas@cvs.openbsd.org>
Date: Fri, 20 Mar 1998 15:40:39 +0000
Subject: Some cleanup of page steals

---
 sys/vm/vm_page.c | 140 +------------------------------------------------------
 1 file changed, 1 insertion(+), 139 deletions(-)

(limited to 'sys/vm/vm_page.c')

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 0f79856ccfc..cf5e97a6683 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vm_page.c,v 1.12 1998/03/01 11:36:42 niklas Exp $	*/
+/*	$OpenBSD: vm_page.c,v 1.13 1998/03/20 15:40:36 niklas Exp $	*/
 /*	$NetBSD: vm_page.c,v 1.41 1998/02/08 18:24:52 thorpej Exp $	*/
 
 #define	VM_PAGE_ALLOC_MEMORY_STATS
@@ -1847,141 +1847,3 @@ vm_page_free_memory(list)
 	simple_unlock(&vm_page_queue_free_lock);
 	splx(s);
 }
-
-#if defined(MACHINE_NONCONTIG) && !defined(MACHINE_PAGES)
-/*
- * We implement pmap_steal_memory and pmap_startup with the help
- * of two simpler functions, pmap_virtual_space and pmap_next_page.
- */
-vm_offset_t
-pmap_steal_memory(size)
-	vm_size_t	size;
-{
-	vm_offset_t	addr, vaddr, paddr;
-
-#ifdef i386	/* XXX i386 calls pmap_steal_memory before vm_mem_init() */
-	if (cnt.v_page_size == 0)		/* XXX */
-		vm_set_page_size();
-#endif
-
-	/*
-	 * We round the size to an integer multiple.
-	 */
-	size = (size + 3) &~ 3; /* XXX */
-	
-	/*
-	 * If this is the first call to pmap_steal_memory,
-	 * we have to initialize ourself.
-	 */
-	if (virtual_space_start == virtual_space_end) {
-		pmap_virtual_space(&virtual_space_start, &virtual_space_end);
-		
-		/*
-		 * The initial values must be aligned properly, and
-		 * we don't trust the pmap module to do it right.
-		 */
-		virtual_space_start = round_page(virtual_space_start);
-		virtual_space_end = trunc_page(virtual_space_end);
-	}
-	
-	/*
-	 * Allocate virtual memory for this request.
-	 */
-	addr = virtual_space_start;
-	virtual_space_start += size;
-	
-	/*
-	 * Allocate and map physical pages to back new virtual pages.
-	 */
-	for (vaddr = round_page(addr); vaddr < addr + size;
-	    vaddr += PAGE_SIZE) {
-		if (!pmap_next_page(&paddr))
-			panic("pmap_steal_memory");
-		
-		/*
-		 * XXX Logically, these mappings should be wired,
-		 * but some pmap modules barf if they are.
-		 */
-		pmap_enter(pmap_kernel(), vaddr, paddr,
-		    VM_PROT_READ|VM_PROT_WRITE, FALSE);
-	}
-	
-	return addr;
-}
-
-void
-pmap_startup(startp, endp)
-	vm_offset_t	*startp;
-	vm_offset_t	*endp;
-{
-	unsigned int	i, freepages;
-	vm_offset_t	paddr;
-	
-	/*
-	 * We calculate how many page frames we will have
-	 * and then allocate the page structures in one chunk.
-	 * The calculation is non-trivial.  We want:
-	 *
-	 * vmpages > (freepages - (vmpages / sizeof(vm_page_t)))
-	 *
-	 * which, with some algebra, becomes:
-	 *
-	 * vmpages > (freepages * sizeof(...) / (1 + sizeof(...)))
-	 *
-	 * The value of vm_page_count need not be exact, but must be
-	 * large enough so vm_page_array handles the index range.
-	 */
-	freepages = pmap_free_pages();
-	/* Fudge slightly to deal with truncation error. */
-	freepages += 1;	/* fudge */
-
-	vm_page_count = (PAGE_SIZE * freepages) /
-	    (PAGE_SIZE + sizeof(*vm_page_array));
-
-	vm_page_array = (vm_page_t)
-	    pmap_steal_memory(vm_page_count * sizeof(*vm_page_array));
-	bzero(vm_page_array, vm_page_count * sizeof(*vm_page_array));
-
-#ifdef	DIAGNOSTIC
-	/*
-	 * Initialize everyting in case the holes are stepped in,
-	 * and set PA to something that will cause a panic...
-	 */
-	for (i = 0; i < vm_page_count; i++)
-		vm_page_array[i].phys_addr = 0xdeadbeef;
-#endif
-
-	/*
-	 * Initialize the page frames.
-	 * Note that some page indices may not be usable
-	 * when pmap_free_pages() counts pages in a hole.
-	 */
-	if (!pmap_next_page(&paddr))
-		panic("pmap_startup: can't get first page");
-	first_page = pmap_page_index(paddr);
-	i = 0;
-	for (;;) {
-		/* Initialize a page array element. */
-		VM_PAGE_INIT(&vm_page_array[i], NULL, 0);
-		vm_page_array[i].phys_addr = paddr;
-		vm_page_free(&vm_page_array[i]);
-
-		/* Are there more physical pages? */
-		if (!pmap_next_page(&paddr))
-			break;
-		i = pmap_page_index(paddr) - first_page;
-
-		/* Don't trust pmap_page_index()... */
-		if (
-#if 0
-		    /* Cannot happen; i is unsigned */
-		    i < 0 ||
-#endif
-		    i >= vm_page_count)
-			panic("pmap_startup: bad i=0x%x", i);
-	}
-
-	*startp = virtual_space_start;
-	*endp = virtual_space_end;
-}
-#endif /* MACHINE_NONCONTIG && !MACHINE_PAGES */
-- 
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