Module Name: src
Committed By: thorpej
Date: Fri Dec 22 17:55:49 UTC 2023
Modified Files:
src/sys/arch/vax/vax: pmap.c
Log Message:
rmspace(): when a PT page is put back onto the free list, invalidate
it's VA in the TB.
rmptep(): Add a comment that the no TIBS is needed for newly-freed PT
pages here because all of the callers perform a TBIA.
To generate a diff of this commit:
cvs rdiff -u -r1.199 -r1.200 src/sys/arch/vax/vax/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/vax/vax/pmap.c
diff -u src/sys/arch/vax/vax/pmap.c:1.199 src/sys/arch/vax/vax/pmap.c:1.200
--- src/sys/arch/vax/vax/pmap.c:1.199 Thu Dec 21 09:09:43 2023
+++ src/sys/arch/vax/vax/pmap.c Fri Dec 22 17:55:49 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.199 2023/12/21 09:09:43 mrg Exp $ */
+/* $NetBSD: pmap.c,v 1.200 2023/12/22 17:55:49 thorpej Exp $ */
/*
* Copyright (c) 1994, 1998, 1999, 2003 Ludd, University of Lule}, Sweden.
* All rights reserved.
@@ -25,7 +25,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.199 2023/12/21 09:09:43 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.200 2023/12/22 17:55:49 thorpej Exp $");
#include "opt_cputype.h"
#include "opt_ddb.h"
@@ -633,6 +633,7 @@ rmspace(struct pmap *pm)
}
free_ptp((((struct pte *)ptpp)->pg_pfn << VAX_PGSHIFT));
*ptpp = 0;
+ mtpr((vaddr_t)br, PR_TBIS);
}
lr = pm->pm_p1lr/NPTEPG;
for (i = lr; i < NPTEPERREG/NPTEPG; i++) {
@@ -647,6 +648,7 @@ rmspace(struct pmap *pm)
}
free_ptp((((struct pte *)ptpp)->pg_pfn << VAX_PGSHIFT));
*ptpp = 0;
+ mtpr((vaddr_t)br, PR_TBIS);
}
if (pm->pm_p0lr != 0)
@@ -772,6 +774,7 @@ rmptep(struct pte *pte)
#endif
free_ptp((((struct pte *)ptpp)->pg_pfn << VAX_PGSHIFT));
*ptpp = 0;
+ /* N.B. callers all do a TBIA, so TBIS not needed here. */
}
static int
