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Take a shot at implementing changes from i386/pmap.c rev 1.328-1.331.

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This commit is contained in:
peter 2002-07-05 00:38:43 +00:00
parent abbe9dfbe5
commit 5d120cf80b
1 changed files with 22 additions and 49 deletions
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71
sys/sparc64/sparc64/pmap.c
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@ -825,24 +825,18 @@ pmap_new_proc(struct proc *p)
u_int i;
/*
* Allocate object for the upages.
* Allocate object for the upage.
*/
upobj = p->p_upages_obj;
if (upobj == NULL) {
upobj = vm_object_allocate(OBJT_DEFAULT, UAREA_PAGES);
p->p_upages_obj = upobj;
}
upobj = vm_object_allocate(OBJT_DEFAULT, UAREA_PAGES);
p->p_upages_obj = upobj;
/*
* Get a kernel virtual address for the U area for this process.
*/
up = (vm_offset_t)p->p_uarea;
if (up == 0) {
up = kmem_alloc_nofault(kernel_map, UAREA_PAGES * PAGE_SIZE);
if (up == 0)
panic("pmap_new_proc: upage allocation failed");
p->p_uarea = (struct user *)up;
}
up = kmem_alloc_nofault(kernel_map, UAREA_PAGES * PAGE_SIZE);
if (up == 0)
panic("pmap_new_proc: upage allocation failed");
p->p_uarea = (struct user *)up;
for (i = 0; i < UAREA_PAGES; i++) {
/*
@ -892,16 +886,8 @@ pmap_dispose_proc(struct proc *p)
vm_page_free(m);
}
pmap_qremove(up, UAREA_PAGES);
/*
* If the process got swapped out some of its UPAGES might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (upobj->type == OBJT_SWAP) {
p->p_upages_obj = NULL;
vm_object_deallocate(upobj);
}
kmem_free(kernel_map, up, UAREA_PAGES * PAGE_SIZE);
vm_object_deallocate(upobj);
}
/*
@ -976,27 +962,21 @@ pmap_new_thread(struct thread *td)
/*
* Allocate object for the kstack,
*/
ksobj = td->td_kstack_obj;
if (ksobj == NULL) {
ksobj = vm_object_allocate(OBJT_DEFAULT, KSTACK_PAGES);
td->td_kstack_obj = ksobj;
}
ksobj = vm_object_allocate(OBJT_DEFAULT, KSTACK_PAGES);
td->td_kstack_obj = ksobj;
/*
* Get a kernel virtual address for the kstack for this thread.
*/
ks = td->td_kstack;
if (ks == 0) {
ks = kmem_alloc_nofault(kernel_map,
(KSTACK_PAGES + KSTACK_GUARD_PAGES) * PAGE_SIZE);
if (ks == 0)
panic("pmap_new_thread: kstack allocation failed");
if (KSTACK_GUARD_PAGES != 0) {
tlb_page_demap(TLB_DTLB, kernel_pmap, ks);
ks += KSTACK_GUARD_PAGES * PAGE_SIZE;
}
td->td_kstack = ks;
ks = kmem_alloc_nofault(kernel_map,
(KSTACK_PAGES + KSTACK_GUARD_PAGES) * PAGE_SIZE);
if (ks == 0)
panic("pmap_new_thread: kstack allocation failed");
if (KSTACK_GUARD_PAGES != 0) {
tlb_page_demap(TLB_DTLB, kernel_pmap, ks);
ks += KSTACK_GUARD_PAGES * PAGE_SIZE;
}
td->td_kstack = ks;
for (i = 0; i < KSTACK_PAGES; i++) {
/*
@ -1046,16 +1026,9 @@ pmap_dispose_thread(struct thread *td)
vm_page_free(m);
}
pmap_qremove(ks, KSTACK_PAGES);
/*
* If the thread got swapped out some of its KSTACK might have gotten
* swapped. Just get rid of the object to clean up the swap use
* proactively. NOTE! might block waiting for paging I/O to complete.
*/
if (ksobj->type == OBJT_SWAP) {
td->td_kstack_obj = NULL;
vm_object_deallocate(ksobj);
}
kmem_free(kernel_map, ks - (KSTACK_GUARD_PAGES * PAGE_SIZE),
(KSTACK_PAGES + KSTACK_GUARD_PAGES) * PAGE_SIZE);
vm_object_deallocate(ksobj);
}
/*