Author: jtl
Date: Fri Apr 20 15:28:58 2018
New Revision: 332826
URL: https://svnweb.freebsd.org/changeset/base/332826
Log:
MFC r330510:
Prior to r329071, pmap_bootstrap() used pmap_kmem_choose() to round the
first available virtual address to a 2MB boundary. After r329071,
create_pagetables() rounds firstaddr up to a 2MB boundary. This ensures
the kernel is mapped in super-pages, which is the point of the logic
in pmap_kmem_choose(). Therefore, it is no longer necessary for
pmap_bootstrap() to round up to the 2MB boundary again.
As pmap_bootstrap() was the only user of pmap_kmem_choose(), we can
delete pmap_kmem_choose().
Sponsored by: Netflix, Inc.
Modified:
stable/11/sys/amd64/amd64/pmap.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/amd64/amd64/pmap.c
==============================================================================
--- stable/11/sys/amd64/amd64/pmap.c Fri Apr 20 15:19:27 2018
(r332825)
+++ stable/11/sys/amd64/amd64/pmap.c Fri Apr 20 15:28:58 2018
(r332826)
@@ -688,23 +688,7 @@ static vm_page_t pmap_allocpte(pmap_t pmap, vm_offset_
static void _pmap_unwire_ptp(pmap_t pmap, vm_offset_t va, vm_page_t m,
struct spglist *free);
static int pmap_unuse_pt(pmap_t, vm_offset_t, pd_entry_t, struct spglist *);
-static vm_offset_t pmap_kmem_choose(vm_offset_t addr);
-/*
- * Move the kernel virtual free pointer to the next
- * 2MB. This is used to help improve performance
- * by using a large (2MB) 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;
-
- newaddr = roundup2(addr, NBPDR);
- return (newaddr);
-}
-
/********************/
/* Inline functions */
/********************/
@@ -1050,7 +1034,6 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
vm_phys_add_seg(KPTphys, KPTphys + ptoa(nkpt));
virtual_avail = (vm_offset_t) KERNBASE + *firstaddr;
- virtual_avail = pmap_kmem_choose(virtual_avail);
virtual_end = VM_MAX_KERNEL_ADDRESS;
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