svn commit: r351487 - head/sys/powerpc/booke

[Justin Hibbits]

Author: jhibbits
Date: Sun Aug 25 20:11:35 2019
New Revision: 351487
URL: https://svnweb.freebsd.org/changeset/base/351487

Log:
  powerpc/booke: Clean up pmap a little for 64-bit
  
  64-bit Book-E pmap doesn't need copy and zero bounce pages, nor the mutex.
  Don't initialize them or reserve space for them.

Modified:
  head/sys/powerpc/booke/pmap.c

Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c       Sun Aug 25 20:08:48 2019        
(r351486)
+++ head/sys/powerpc/booke/pmap.c       Sun Aug 25 20:11:35 2019        
(r351487)
@@ -161,17 +161,19 @@ static int availmem_regions_sz;
 static struct mem_region *physmem_regions;
 static int physmem_regions_sz;
 
+#ifndef __powerpc64__
 /* Reserved KVA space and mutex for mmu_booke_zero_page. */
 static vm_offset_t zero_page_va;
 static struct mtx zero_page_mutex;
 
-static struct mtx tlbivax_mutex;
-
 /* Reserved KVA space and mutex for mmu_booke_copy_page. */
 static vm_offset_t copy_page_src_va;
 static vm_offset_t copy_page_dst_va;
 static struct mtx copy_page_mutex;
+#endif
 
+static struct mtx tlbivax_mutex;
+
 /**************************************************************************/
 /* PMAP */
 /**************************************************************************/
@@ -1646,6 +1648,7 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o
        virtual_avail = round_page(data_end);
        virtual_end = VM_MAX_KERNEL_ADDRESS;
 
+#ifndef __powerpc64__
        /* Allocate KVA space for page zero/copy operations. */
        zero_page_va = virtual_avail;
        virtual_avail += PAGE_SIZE;
@@ -1661,7 +1664,6 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o
        mtx_init(&zero_page_mutex, "mmu_booke_zero_page", NULL, MTX_DEF);
        mtx_init(&copy_page_mutex, "mmu_booke_copy_page", NULL, MTX_DEF);
 
-#ifndef __powerpc64__
        /* Allocate KVA space for ptbl bufs. */
        ptbl_buf_pool_vabase = virtual_avail;
        virtual_avail += PTBL_BUFS * PTBL_PAGES * PAGE_SIZE;
@@ -1820,12 +1822,10 @@ mmu_booke_bootstrap(mmu_t mmu, vm_offset_t start, vm_o
        /* Initialize (statically allocated) kernel pmap. */
        /*******************************************************/
        PMAP_LOCK_INIT(kernel_pmap);
-#ifndef __powerpc64__
-       kptbl_min = VM_MIN_KERNEL_ADDRESS / PDIR_SIZE;
-#endif
 #ifdef __powerpc64__
        kernel_pmap->pm_pp2d = (pte_t ***)kernel_ptbl_root;
 #else
+       kptbl_min = VM_MIN_KERNEL_ADDRESS / PDIR_SIZE;
        kernel_pmap->pm_pdir = (pte_t **)kernel_ptbl_root;
 #endif
 
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