Module Name: src
Committed By: rin
Date: Thu Feb 20 05:21:55 UTC 2020
Modified Files:
src/sys/arch/powerpc/ibm4xx: pmap.c
Log Message:
Fix off-by-one error for ctx (ASID).
Note that NUM_CTX = 256 = 0 stands for disabling protection by ASID.
To generate a diff of this commit:
cvs rdiff -u -r1.77 -r1.78 src/sys/arch/powerpc/ibm4xx/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/powerpc/ibm4xx/pmap.c
diff -u src/sys/arch/powerpc/ibm4xx/pmap.c:1.77 src/sys/arch/powerpc/ibm4xx/pmap.c:1.78
--- src/sys/arch/powerpc/ibm4xx/pmap.c:1.77 Thu Feb 20 05:13:16 2020
+++ src/sys/arch/powerpc/ibm4xx/pmap.c Thu Feb 20 05:21:54 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.77 2020/02/20 05:13:16 rin Exp $ */
+/* $NetBSD: pmap.c,v 1.78 2020/02/20 05:21:54 rin Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
@@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.77 2020/02/20 05:13:16 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.78 2020/02/20 05:21:54 rin Exp $");
#include <sys/param.h>
#include <sys/cpu.h>
@@ -1563,7 +1563,7 @@ ctx_alloc(struct pmap *pm)
/* Find a likely context. */
cnum = next;
do {
- if ((++cnum) > NUMCTX)
+ if ((++cnum) >= NUMCTX)
cnum = MINCTX;
} while (ctxbusy[cnum] != NULL && cnum != next);
@@ -1573,7 +1573,7 @@ oops:
cnum = MINCTX; /* Never steal ctx 0 or 1 */
if (ctx_flush(cnum)) {
/* oops -- something's wired. */
- if ((++cnum) > NUMCTX)
+ if ((++cnum) >= NUMCTX)
cnum = MINCTX;
goto oops;
}
