[src/trunk]: src/sys/arch/powerpc/ibm4xx pte_enter() and pmap_enter_pv(): ret...

[rin <rin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/71aa84ad5e76
branches:  trunk
changeset: 1023448:71aa84ad5e76
user:      rin <rin%NetBSD.org@localhost>
date:      Wed Sep 08 00:17:21 2021 +0000

description:
pte_enter() and pmap_enter_pv(): return zero for success, and
non-zero value for failure, as normally expected.

diffstat:

 sys/arch/powerpc/ibm4xx/pmap.c |  23 ++++++++++-------------
 1 files changed, 10 insertions(+), 13 deletions(-)

diffs (98 lines):

diff -r c0869be04db2 -r 71aa84ad5e76 sys/arch/powerpc/ibm4xx/pmap.c
--- a/sys/arch/powerpc/ibm4xx/pmap.c    Tue Sep 07 20:41:58 2021 +0000
+++ b/sys/arch/powerpc/ibm4xx/pmap.c    Wed Sep 08 00:17:21 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.104 2021/09/05 12:47:10 rin Exp $   */
+/*     $NetBSD: pmap.c,v 1.105 2021/09/08 00:17:21 rin Exp $   */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.104 2021/09/05 12:47:10 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.105 2021/09/08 00:17:21 rin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_ddb.h"
@@ -235,13 +235,13 @@
        if (!pm->pm_ptbl[seg]) {
                /* Don't allocate a page to clear a non-existent mapping. */
                if (!pte)
-                       return 1;
+                       return 0;
 
                vaddr_t km = uvm_km_alloc(kernel_map, PAGE_SIZE, 0,
                    UVM_KMF_WIRED | UVM_KMF_ZERO | UVM_KMF_NOWAIT);
 
                if (__predict_false(km == 0))
-                       return 0;
+                       return ENOMEM;
 
                pm->pm_ptbl[seg] = (u_int *)km;
        }
@@ -256,7 +256,7 @@
                else
                        pm->pm_stats.resident_count++;
        }
-       return 1;
+       return 0;
 }
 
 /*
@@ -700,9 +700,6 @@
        dcache_wbinv_page(dst);
 }
 
-/*
- * This returns != 0 on success.
- */
 static inline int
 pmap_enter_pv(struct pmap *pm, vaddr_t va, paddr_t pa, int flags)
 {
@@ -731,7 +728,7 @@
                        if ((flags & PMAP_CANFAIL) == 0)
                                panic("pmap_enter_pv: failed");
                        splx(s);
-                       return 0;
+                       return ENOMEM;
                }
                npv->pv_va = va;
                npv->pv_pm = pm;
@@ -746,7 +743,7 @@
 
        splx(s);
 
-       return 1;
+       return 0;
 }
 
 static void
@@ -849,7 +846,7 @@
        if (pmap_initialized && managed) {
                char *attr;
 
-               if (!pmap_enter_pv(pm, va, pa, flags)) {
+               if (pmap_enter_pv(pm, va, pa, flags)) {
                        /* Could not enter pv on a managed page */
                        return ENOMEM;
                }
@@ -866,7 +863,7 @@
        s = splvm();
 
        /* Insert page into page table. */
-       if (__predict_false(!pte_enter(pm, va, tte))) {
+       if (__predict_false(pte_enter(pm, va, tte))) {
                if (__predict_false((flags & PMAP_CANFAIL) == 0))
                        panic("%s: pte_enter", __func__);
                splx(s);
@@ -961,7 +958,7 @@
        s = splvm();
 
        /* Insert page into page table. */
-       if (__predict_false(!pte_enter(pm, va, tte)))
+       if (__predict_false(pte_enter(pm, va, tte)))
                panic("%s: pte_enter", __func__);
 
        splx(s);