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[PowerPC] Implement pmap_mincore() for moea

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Do the same as previous for moea.

Tested on G4.
This commit is contained in:
Brandon Bergren 2020-09-13 16:46:03 +00:00
parent 96f57c313d
commit 43d3fc803c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=365691
1 changed files with 49 additions and 1 deletions
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50
sys/powerpc/aim/mmu_oea.c
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@ -114,6 +114,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kerneldump.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/mman.h>
#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
@ -126,6 +127,7 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/openfirm.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
@ -291,6 +293,7 @@ boolean_t moea_is_prefaultable(pmap_t, vm_offset_t);
boolean_t moea_is_referenced(vm_page_t);
int moea_ts_referenced(vm_page_t);
vm_offset_t moea_map(vm_offset_t *, vm_paddr_t, vm_paddr_t, int);
static int moea_mincore(pmap_t, vm_offset_t, vm_paddr_t *);
boolean_t moea_page_exists_quick(pmap_t, vm_page_t);
void moea_page_init(vm_page_t);
int moea_page_wired_mappings(vm_page_t);
@ -354,7 +357,8 @@ static struct pmap_funcs moea_methods = {
.qremove = moea_qremove,
.release = moea_release,
.remove = moea_remove,
.remove_all = moea_remove_all,
.remove_all = moea_remove_all,
.mincore = moea_mincore,
.remove_write = moea_remove_write,
.sync_icache = moea_sync_icache,
.unwire = moea_unwire,
@ -1926,6 +1930,50 @@ moea_remove_all(vm_page_t m)
rw_wunlock(&pvh_global_lock);
}
static int
moea_mincore(pmap_t pm, vm_offset_t va, vm_paddr_t *pap)
{
struct pvo_entry *pvo;
vm_paddr_t pa;
vm_page_t m;
int val;
bool managed;
PMAP_LOCK(pm);
pvo = moea_pvo_find_va(pm, va & ~ADDR_POFF, NULL);
if (pvo != NULL) {
pa = PVO_PADDR(pvo);
m = PHYS_TO_VM_PAGE(pa);
managed = (pvo->pvo_vaddr & PVO_MANAGED) == PVO_MANAGED;
val = MINCORE_INCORE;
} else {
PMAP_UNLOCK(pm);
return (0);
}
PMAP_UNLOCK(pm);
if (m == NULL)
return (0);
if (managed) {
if (moea_is_modified(m))
val |= MINCORE_MODIFIED | MINCORE_MODIFIED_OTHER;
if (moea_is_referenced(m))
val |= MINCORE_REFERENCED | MINCORE_REFERENCED_OTHER;
}
if ((val & (MINCORE_MODIFIED_OTHER | MINCORE_REFERENCED_OTHER)) !=
(MINCORE_MODIFIED_OTHER | MINCORE_REFERENCED_OTHER) &&
managed) {
*pap = pa;
}
return (val);
}
/*
* Allocate a physical page of memory directly from the phys_avail map.
* Can only be called from moea_bootstrap before avail start and end are